Recent activity disappears

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Captchas

• I have read the instructions.
• I have searched existing issues and avoided creating duplicates.
• I am not filing an enhancement request.

What happened?

After a few days of installation, the recent activity is no longer displayed. This also affects Firefox, and Firefox's recent activity also disappears.
The Firefox page started showing recent activity a few days after uninstalling Zen Browser (even deleting profiles and such).

Reproducible?

• I have checked that this issue cannot be reproduced on Mozilla Firefox.

Version

1.0.1-a19

What platform are you seeing the problem on?

Windows

Relevant log output

No response