Doing a performance profiling freezes notebook and defers all mouse events until the profile has stopped

[Tyriar]

Testing #114969

This issue makes it touch to look into scroll/layout perf of notebooks

Repro:

1. Open an ipynb
2. Open devtools
3. Do a perf profile
4. Use the mouse wheel in the editor, nothing happens
5. Stop the profile, all wheel events are triggered

Version: 1.53.0-insider (user setup)
Commit: 1a9dd75
Date: 2021-01-26T05:13:59.356Z
Electron: 11.2.1
Chrome: 87.0.4280.141
Node.js: 12.18.3
V8: 8.7.220.31-electron.0
OS: Windows_NT x64 10.0.19042

[rebornix]

@deepak1556 do you have ideas about this?

[deepak1556]

Is it better when you start the app with --disable-renderer-accessibility ?

[Tyriar]

@deepak1556 no it still happens, I ran it like this:

$ c --disable-renderer-accessibility
Warning: 'disable-renderer-accessibility' is not in the list of known options, but still passed to Electron/Chromium.

I don't see it on the renderer's argv, does it only get applied to the main proc?

[deepak1556]

Issue does not repro with recent versions.