[BUG, Hang] Hang (eating 50% CPU for 1 thread) on Youtube, when restarting after crash in "--single-process" mode

[IDA-RE-things]

Bug Symptoms:
On restarting after crash, browser hang happen, eating 50 % CPU for 1 thread. (see screenshots)
In --single-process mode.

Additional info:
I have detected which thread do this and whats going here. : it is VizCompositorThread. But why it is in such never-ending loop, I dont know.

To Reproduce:

• steps ~same as in
  [BUG, Crash] Crash On Exit from Youtube in "--single-process" mode (if page loaded partially) #502,
• then restart browser with 1 page opened, if previously crash happened.
  Kill the browser manually from ProcessExplorer, or after real crash.

Screenshots:
Page dont want to be rendered:

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Whats happened? It Hangs ..

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Which thread ? VizCompositorThread

This Functions executed in loop : (after I set breakpoints on them) :

Config:

• OS: XP 32-bit
• 1-core Hypher-threading CPU
• Browser ver: v122-hf: https://github.com/win32ss/supermium/releases/tag/v122-hf
• chrome.dll: latest available (17.03.2024) : https://github.com/win32ss/supermium/releases/download/v122-dbg/122_new_pdb_32.7z
• progwrp.dll: 1.1.0.5002