[Webkit-unassigned] [Bug 281656] New: Web Inspector: Memory leak with high-bandwidth operations on web workers when inspector is open

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=281656

            Bug ID: 281656
           Summary: Web Inspector: Memory leak with high-bandwidth
                    operations on web workers when inspector is open
           Product: WebKit
           Version: Safari 18
          Hardware: Mac (Apple Silicon)
                OS: macOS 15
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Inspector
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ivan.curic at gmail.com
                CC: inspector-bugzilla-changes at group.apple.com

Created attachment 472966

  --> https://bugs.webkit.org/attachment.cgi?id=472966&action=review

Video showcasing the memory leak in Activity Monitor

Opening the Web Inspector, even without any logging or inspection done, leads to a memory leak that only happens once - until the first page crash or stabilization.
When it does crash, it either ends up being a completely crashed tab, or I get a message bar with "This web page was reloaded because it was using significant memory".

The memory leak is not present in the "Safari Web Inspector process", but in the tab process itself. However, it's not visible in the Memory timeline in the inspector.

Repro:
https://imagedata-worker-leak.netlify.app
https://github.com/ivancuric/memory-leak-repro

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