[Webkit-unassigned] [Bug 261339] New: REGRESSION (263708 at main): [ macOS debug wk1 ] ASSERTION FAILED: ScriptDisallowedScope::InMainThread::isScriptAllowed()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=261339

            Bug ID: 261339
           Summary: REGRESSION (263708 at main): [ macOS debug wk1 ]
                    ASSERTION FAILED:
                    ScriptDisallowedScope::InMainThread::isScriptAllowed()
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: rackler at apple.com

Created attachment 467607

  --> https://bugs.webkit.org/attachment.cgi?id=467607&action=review

symbolicated-log

Description:
editing/selection/cleared-by-relayout.html

Is a constant crash on macOS ToT and since 263708 at main.

This issue can be bisected to 263708 at main using command:
run-webkit-tests --debug --iterations=1 -1  editing/selection/cleared-by-relayout.html

History:
https://results.webkit.org/?suite=layout-tests&test=editing%2Fselection%2Fcleared-by-relayout.html&platform=mac&flavor=wk1&style=debug&recent=false

Crash Log:
Thread 0 Crashed::   Dispatch queue: com.apple.main-thread
0   com.apple.JavaScriptCore                   0x11892e5ae    WTFCrash
1   com.apple.JavaScriptCore                   0x11892e5c8    WTFCrashWithSecurityImplication
2   com.apple.WebCore                          0x124dd927c    WebCore::Document::dispatchWindowEvent(WebCore::Event&, WebCore::EventTarget*)
3   com.apple.WebCore                          0x125b71fb0    WebCore::dispatchEventsOnWindowAndFocusedElement(WebCore::Document*, bool)
4   com.apple.WebCore                          0x125b71ea6    WebCore::FocusController::setFocusedInternal(bool)
5   com.apple.WebCore                          0x125b73fae    WebCore::FocusController::setActivityState(WTF::OptionSet<WebCore::ActivityState>)

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