No page can load while uBlock is active

[j36e]

Prerequisites

• I verified that this is not a filter list issue. Report any issues with filter lists or broken website functionality in the uAssets issue tracker.
• This is NOT a YouTube, Facebook or Twitch report. These sites MUST be reported by clicking their respective links.
• This is not a support issue or a question. For support, questions, or help, visit /r/uBlockOrigin.
• I performed a cursory search of the issue tracker to avoid opening a duplicate issue.
• The issue is not present after disabling uBO in the browser.
• I checked the documentation to understand that the issue I am reporting is not normal behavior.

I tried to reproduce the issue when...

• uBO is the only extension.
• uBO uses default lists and settings.
• using a new, unmodified browser profile.

Description

output.mp4

Pages won't load with UBO enabled but everything works fine when it's off. Everything was fine a couple of hours ago and yes I did reboot my computer.
Sorry for the bad video quality my laptop is slow

A specific URL where the issue occurs.

https://github.com/uBlockOrigin/uBlock-issues/issues/new?assignees=&labels=&projects=&template=bug_report.yml

Steps to Reproduce

1. [Enable UBO]
2. [Try to load a page]

Expected behavior

The page to load

Actual behavior

It did not :(

uBO version

1.57.0

Browser name and version

Chromium (chromium-123.0.6312.86_1)

Operating System and version

Void linux

[j36e]

The first tab title seemed to load but it was probably cached since I tried the same query minutes before

[gorhill]

When you click uBO's "background.html" link in chrome://extensions/, this opens the browser tools for uBO. Can you see something reported in the console pane?

[j36e]

Lmao the addon wouldnt do anything when I clicked on it so I reinstalled and it's all working now sorry for the stupid issue report

[gorhill]

We had other reports of such behavior, so I don't consider this invalid. Problem is that so far I have been unable to investigate further since the issue disappear upon reinstall.

@j36e Do you think that uBO had just updated to 1.57.0 before the issue occurred?

[ghost]

I faced the same issue too. But in my case, after updating to 1.57.0, i lost all saved filters too and uBO was completely reset to default. allReadyAfter after this incident was over 80k ms. The dashboard was completely blank after this, restarting my browser did fix it, but had to continue from a old backup.
Browser used: Edge
Possible in #3219, OP did face something similar (chromium used)

[stephenhawk8054]

@voidlyvidevoid Can you do the steps described in this: #3217 (comment)

[ghost]

Tho this happend a few weeks ago when the update was pushed. Never had anything over 15k ms except when this occured. I get 12-15k ms consistently in FF and Edge and I take the blame for that as I have nearly 500k+ network filters (mostly badware, malware and anti-paywalls)
Also, something maybe unrelated, Edge takes a good 30s after restart to load anything.(this is with and without suspendUntilListsAreLoaded: true)

[stephenhawk8054]

@voidlyvidevoid Can you click on uBO icon > 💬 Report button > scroll to the bottom > click on Troubleshooting Information and copy paste it here?

[ghost]

I usually don't find them these high, but 12-15k ms and some 3k is mostly consistent. This is immediately after a restart, with 12 tabs open from previous session. (Using hard mode,with block large media)
Other extensions: Webtime tracker and Dark reader

uBlock Origin: 1.57.2
Chromium: 124
filterset (summary):
 network: 544853
 cosmetic: 260618
 scriptlet: 53426
 html: 0
listset (total-discarded, last-updated):
 added:
  https://gitlab.com/magnolia1234/bypass-paywalls-clean-filters/-/raw/main/bpc-paywall-filter.txt: 1065-0, 9d.14h.27m
  https://o0.pages.dev/Pro/adblock.txt: 155647-18753, 6d.21h.26m
  https://raw.githubusercontent.com/AdguardTeam/cname-trackers/master/data/combined_disguised_trackers_justdomains.txt: 69497-0, 13h.34m
  https://raw.githubusercontent.com/DandelionSprout/adfilt/master/Alternate versions Anti-Malware List/AntiMalwareDomains.txt: 21187-7502, 8h.44m
  https://raw.githubusercontent.com/DandelionSprout/adfilt/master/Dandelion Sprout's Anti-Malware List.txt: 85890-1918, 8h.43m
  https://raw.githubusercontent.com/DandelionSprout/adfilt/master/LegitimateURLShortener.txt: 2621-0, 9h.44m
  https://raw.githubusercontent.com/gwarser/filter-lists/master/lan-block-strict.txt: 54-0, 11d.6h.44m
  https://raw.githubusercontent.com/hagezi/dns-blocklists/main/adblock/ultimate.txt: 187296-102175, 15h.34m
  https://raw.githubusercontent.com/liamengland1/miscfilters/master/antipaywall.txt: 2098-36, 8h.43m
  https://raw.githubusercontent.com/voidlyvidevoid/filterlist1/main/filterlist.txt: 4-0, 1m
  https://someonewhocares.org/hosts/ipv6/hosts: 23338-23337, 16h.35m
  adguard-generic: 80958-5587, 1d.15h.33m
  [23 lists not shown]: [too many]
 default:
  user-filters: 23-0, never
  ublock-filters: 37577-3878, 1m Δ
  ublock-badware: 8320-919, 1m Δ
  ublock-privacy: 832-101, 1m Δ
  ublock-unbreak: 2256-1, 1m Δ
  ublock-quick-fixes: 274-25, 1m Δ
  easylist: 86419-34227, 1m Δ
  easyprivacy: 50793-37792, 1m Δ
  urlhaus-1: 13070-111, 15h.34m
  plowe-0: 3739-3518, 8d.16h.55m
filterset (user): [array of 23 redacted]
trustedset:
 added: [array of 6 redacted]
switchRuleset:
 added: [array of 15 redacted]
 removed:
  no-large-media: behind-the-scene false
hostRuleset:
 added: [array of 70 redacted]
userSettings:
 advancedUserEnabled: true
 largeMediaSize: 250
 suspendUntilListsAreLoaded: true
hiddenSettings:
 filterAuthorMode: true
supportStats:
 allReadyAfter: 29598 ms (selfie)
 maxAssetCacheWait: 10212 ms
 cacheBackend: indexedDB
popupPanel:
 blocked: 12
 no-large-media: true
 network:
  github.com: 12

[stephenhawk8054]

@voidlyvidevoid This gitlab user is removed by Gitlab already so its filter list cannot be updated: https://gitlab.com/magnolia1234/bypass-paywalls-clean-filters/-/raw/main/bpc-paywall-filter.txt

You are using a heavily modified configuration so we cannot pinpoint what causes the issue. Backup and reset to default settings and test again. Then restore your configuration one-by-one and see which one is causing issue.

Anyways, since you can access uBO's dashboard, I don't think your issue is the same as this issue. It's more similar to this: #1865 so please continue in that thread instead. But do what I said above first.

[stephenhawk8054]

@gorhill However, I'm thinking maybe some user-removed gitlab links could be related to OP's issue? From the screenshot, I see gitlab.com/users/sign_in link in the error line instead, which is a redirection from https://gitlab.com/magnolia1234/bypass-paywalls-clean-filters/-/raw/main/bpc-paywall-filter.txt

[gorhill]

I expect over half a million network filter is going to cause longer delay at launch, although 25s seems high, it's not a configuration I test often. It could be a storage issue, in which case it might be useful to force the indexedDB to be re-created, a backup/restore should do this.

[gwarser]

@garry-ut99 there is a timeout for the badge - it will be shorter than his 80 seconds.

[gorhill]

there is a timeout for the badge

The countdown starts when uBO is all ready if I remember correctly.

[Avellea]

Popping in to say I have the same issue on the latest versions of Chrome and Thorium. I cannot access the uBO dashboard or any websites. There is nothing reported in the uBO DevTools console either.

Uninstalling and reinstalling the extension does seem to fix the issue.

[stephenhawk8054]

@Avellea Do you remember you were using / enabling any additional filter lists (bypass paywall...)?

[Avellea]

@Avellea Do you remember you were using / enabling any additional filter lists (bypass paywall...)?

I do not use any custom filter lists at all.

[Avellea]

"Popping in" is appreciated and useful to know how many users have the same problem, and how big is the problem, but we need more details to help:

Apologies, let me clear this up.

• Issue occurred after a browser restart.
• The toolbar icon was the regular red icon
• I have not been able to reproduce the issue since the fix.
• Version was the latest at the time, uBlock Origin 1.57.0, but it did happen prior to an update as well, on an unknown version.
• OS Version is Windows 11 Build 22631

[iMarbot]

Started experiencing this yesterday with uBlock Origin development build 1.57.3.6. I'm sorry but I don't know whether it happened after a browser or extension update. It happened after I closed Chrome entirely and then re-opened it, everything was refusing to load. The icon was yellow with the exclamation mark. Also, the extension was using almost 100 CPU in Chrome's task manager.

Disabling the extension leads to pages instantly loading, without even needing to refresh or restart their loading.

Chrome version: 124.0.6367.91 (Official Build) (64-bit) (cohort: M124 Rollout)

I have not tested cleaning the extension data or re-installing it as I didn't want to lose my settings but also in case I can help reproduce the issue.

I also have uBlock Origin 1.57.0 installed (not running at the same time, obviously) which works fine on the exact same browser environment. The settings are a little different but I can't even open the uBlock popup or settings in the dev build because it's just hanging on something with that high CPU usage.

Let me know if there's anything I have missed or can do to help isolate the issue.

[gorhill]

Despite those error messages, uBO appears to work fine though? The error messages are still shown by uBO itself, but they should no longer break uBO.

[Procyon-b]

I have never had any noticeable issue since switching to the beta since version 1.49.3.4 (it was my secondary computer at the time, but anyway...)
I only saw the errors since "Collect errors" is on by default for extensions locally installed.

[krystian3w]

You seem to be correct, it's entirely BitWarden's fault.

Or in Firefox 116+, due on my ESR is not exist.

[valynor]

Brave Browser 1.65.133 Chromium: 124.0.6367.208 (Official Build) (arm64) on macOS 14.5 here.
uBO 1.57.0

• same issue, suddenly basically no page loads anymore (browser renderer helper 100% cpu)
• browser restart does not help, all pinned tabs do not load
• disabled all extensions .. browser worked again. This way I found out it's uBO causing this
• with uBO as the ONLY extension enabled .. nothing works. turning it off and immediately everything is fine again
• uninstalled, reinstalled uBO and set it up exactly the same way as before ... everything works again
• this happened 2x in this week
• I do not have bitwarden installed

uBlock Origin: 1.57.0
Chromium: 124
filterset (summary):
 network: 348926
 cosmetic: 175741
 scriptlet: 45805
 html: 0
listset (total-discarded, last-updated):
 added:
  https://raw.githubusercontent.com/StevenBlack/hosts/master/alternates/fakenews-gambling/hosts: 143023-4984, 20m
  https://raw.githubusercontent.com/bpc-clone/bypass-paywalls-clean-filters/main/bpc-paywall-filter.txt: 1078-2, never
  adguard-generic: 81608-6817, 20m
  adguard-spyware-url: 1512-119, 20m
  adguard-spyware: 83499-32441, 20m
  block-lan: 66-0, 20m
  curben-phishing: 390-0, 20m
  adguard-cookies: 29595-47, 20m
  ublock-cookies-adguard: 1145-0, 20m
  fanboy-cookiemonster: 50997-3892, 20m
  ublock-cookies-easylist: 1145-1144, 20m
  fanboy-social: 15980-17, 20m
  [2 lists not shown]: [too many]
 default:
  user-filters: 4-0, never
  ublock-filters: 38073-302, 25m Δ
  ublock-badware: 8546-1, 29m Δ
  ublock-privacy: 906-0, 29m Δ
  ublock-unbreak: 2275-1, 29m Δ
  ublock-quick-fixes: 260-0, 25m Δ
  easylist: 87511-1016, 30m
  easyprivacy: 50909-826, 30m
  urlhaus-1: 12645-1, 30m
  plowe-0: 3729-0, 30m
filterset (user): [array of 4 redacted]
trustedset:
 added: [array of 1 redacted]
switchRuleset:
 added: [array of 1 redacted]
hostRuleset:
 added: [array of 97 redacted]
userSettings:
 advancedUserEnabled: true
 suspendUntilListsAreLoaded: true
hiddenSettings:
 autoUpdateDelayAfterLaunch: 20
supportStats:
 allReadyAfter: 139 ms (selfie)
 maxAssetCacheWait: 54 ms
 cacheBackend: indexedDB

[xOleg01]

I have the same issue sometimes. uBO ext in Chromium Task Manager uses ~20% CPU and webpage is not loaded if its a first page after startup. uBO button freezing up too.
Browser restart and settings reload fixes the problem. No reinstall needed.

Chromium 122.0.6200.0 Iron Browser. Windows 10 LTSC. uBO 1.57.0

P.S. Chrome Web Store has a lot of complains on this problem (russian page).

[jimvlambe]

As of this morning (22nd May) the extension kills all web access to the internet. Switching the extension off restores function (Version 125.0.6422.76 (Official Build) (64-bit) Linux/Kubuntu). Chrome updated to this version last night.

[jscheid]

I'm seeing this issue on Firefox (macOS), I think it started yesterday. The symptoms are that the network seems to be down, i.e. everything takes forever to load. Once I turn off the extension it works. A browser restart (with the extension enabled) also helps, but only for some time. The last restart is a couple of hours ago perhaps and it started again just now.

Troubleshooting Information

uBlock Origin: 1.58.0
Firefox: 127
filterset (summary):
 network: 138742
 cosmetic: 47005
 scriptlet: 20144
 html: 1851
listset (total-discarded, last-updated):
 default:
  user-filters: 0-0, never
  ublock-filters: 39099-112, 2h.14m Δ
  ublock-badware: 8705-0, 2h.14m Δ
  ublock-privacy: 1018-4, 2h.14m Δ
  ublock-unbreak: 2425-2, 2h.14m Δ
  ublock-quick-fixes: 119-5, 2h.14m Δ
  easylist: 86385-174, 2h.14m Δ
  easyprivacy: 52708-65, 2h.14m Δ
  urlhaus-1: 15240-5, 9m
  plowe-0: 3551-988, 5d.4h.56m
filterset (user): [empty]
trustedset:
 added: [array of 2 redacted]
userSettings: [none]
hiddenSettings: [none]
supportStats:
 allReadyAfter: 299 ms
 maxAssetCacheWait: 183 ms
 cacheBackend: indexedDB

[stephenhawk8054]

@jscheid Can you go to about:addons page (type in URL bar) and screenshot it here?

[jscheid]

@stephenhawk8054 I've React Developer Tools, Multi-Account Containers and 1Password. I haven't added or removed any add-ons recently, not for a month or so.

[stephenhawk8054]

@jscheid Can you turn off all other extensions, except uBO and Containers extension, restart the browser, open new tab and test again?

[jscheid]

The problem is it only happens spuriously. I could leave the others off for a day or so, but it would be an inconvenience and if the bug doesn't happen during that time it doesn't really prove much. (It may not have happened with the other addons enabled either.)

Counterproposal: I'm comfortable on the JS console, is there anything I can investigate next time it happens?

[gorhill]

You could launch a profiling session when the issue occurs to see if anything in the results is of use, see https://profiler.firefox.com/.

[stephenhawk8054]

If the issue occurs spuriously, how can you be sure it's fixed by turning off uBO but not another spurious event or by turning off other extensions?

If the issue occurs again, be sure that there's only uBO at that time, and use Firefox profiler as above link.

[jscheid]

@stephenhawk8054 @gorhill

If the issue occurs spuriously, how can you be sure it's fixed by turning off uBO but not another spurious event or by turning off other extensions?

I guess I can't be 100.0% sure, however to recap my observations:

• A few times now my FF got into a state (after hours or days of use) where it behaves as if the network is off (as if packets get dropped) for all tabs. I've tried waiting it out but it doesn't seem to recover by itself.
• Restarting FF fixes it, so I was looking for a bug report against FF but instead found this ticket, which is when I started to suspect uBO.
• When it then happened again I tested this theory, and turning off the uBO add-on (as opposed to turning off uBO at the tab level) made everything work again immediately. Turning it back on resumed the symptoms immediately. (I've toggled it off/on a few times.)

To me this strongly points at uBO as the offender especially given the other reports here in this ticket, but you're right that it's not conclusive proof.

If the issue occurs again, be sure that there's only uBO at that time, and use Firefox profiler as above link.

Sure, will do, thanks!

[stephenhawk8054]

To me this strongly points at uBO as the offender especially given the other reports

This issue thread is specifically related to Chromium API, not related to Firefox.

[jscheid]

This issue thread is specifically related to Chromium API, not related to Firefox.

Right, OK. I'll try to diagnose better next time it happens and happy to open a separate ticket then if I can still blame uBO 😄 Many thanks for your work on it by the way!

[Marocco2]

Ublock Origin 1.57.2 and 1.58.0 appears to be broken like in title on latest Microsoft Edge Canary 128.0.2710.0
Tried to reinstall the extension but I can't get it to work (no more infinite page load at least) and extension settings page is a white page

[gorhill]

Chrome/Edge Canary are not officially supported, too high likelihood of breakage (example). Use either beta or stable.

[rwong2888]

Stable stopped loading any page for me.
Edge Version 126.0.2592.102 (Official build) (arm64)

update:
working for me now

[Villy-web]

I guess I can't be 100.0% sure, however to recap my observations:

The problem seems to occur when the ublock fails to update its filter list. This problem consistently occurs for me when using a whitelist of sites on a proxy.

[Haus1]

I've had this happen two or three times in the past and the solution was to clear the cache and force it to resync. Thankfully it's been awhile since I've had it happen.

edit: this was on Chromium