Debug tools will not run with pxt-jacdac breakout boards connected

[ross-inksmith]

Describe the bug
The debugging interface will not allow for pausing, stepping through code, nor does it highlight code blocks for projects with pxt-jacdac if there is a physical device connected and powered on or if just a bare microbit is connected to makecode

Tested using the Forward Education Climate Action Kit as well as the KittenBot jacdac kit on Windows

Steps

1. Create a program with at least one jacdac block
2. Download the code to a microbit
3. Switch to the debugger

• Code execution can't be controlled or followed

4. Plug the microbit into the edge connector of a breakout board, make sure it's powered off

• Debugger now works as normal
  5 . Toggle the power switch on the breakout board
• Debugger breaks again

[fwdunc]

Video demonstration of the steps taken. The file is too large to upload in a comment so here's the link to it on the Forward Education Google Drive.

[tballmsft]

@ross-inksmith, the problem here is the micro:bit has gone into proxy mode, per design with FE, which means the user code is not running. I have forgotten, is it even possible to run code in simulator when a HW micro:bit is on the Jacdac bus? Happy to jump on a call and revisit the design and look into issues with you.