[Functional, Annoying, 126 R3] DevTools hangs on long inlined JS in certain cases

[XakerTwo]

Description DevTools hangs on long inlined JS

• on closing focused tab with code when there is syntax error
• on switching back to sources category with opened inlined not pretty printed code
• on manual switching between tabs with source code

not tested with files, mostly i have this issue with file-less code (VM-ed) and i'm well sick of it when DevTools hangs, it consume entire core and slowly grow in RAM consumtion. right now i have one, hanged for an hour and almost 1GB.

To Reproduce

1. Some how get and open to view well long minified code in sources category (e.g. refernce to VM in console)
2. disable pretty print for it (if there no error)
3. switch to console and set focus to input(so you will see blinking cursor)
4. now try switch back to the sources category

Desktop:

• OS: Windows 7 SP1 x64
• SM: 124.0.6367.245 R2 x64
• SM: 126.0.6478.249 R3 x64 (сonfirmed)

Additional context while rederer of DevTools continue to work but interaction not works, the page has opposite issue - DevTools UI part not updates but still interactive if tab was switched by browser(e.g. breakpoint) it's ok and even tab with syntax error can be closed, just not focusing it pretty print save from this situation, but on syntax error it's not work. syntax typo like that(missing semicolon after method call)

x=Date.now()y=6

search (#807) not involved, but i aware about SM 126 and possibly related fix. if my scenario is reproducible for someone else on SM 124 but not SM 126 let me know. Looking at amount of issues with 126 i'm not ready for update right now.

[XakerTwo]

Confirmed - it's actual and reproducible on SM 126, but slightly different steps chain

1. Open long minified js without pretty print(e.g. from console by clicking on VM reference)
2. Close it - now it closed correctly(i tested it once, probably it closed by occassion)
3. Open it again - bingo and we hang and leak again

screenshot