[Webkit-unassigned] [Bug 236346] New: Continual resizeobserver-driven flashing on Jupyter notebook page

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=236346

            Bug ID: 236346
           Summary: Continual resizeobserver-driven flashing on Jupyter
                    notebook page
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: simon.fraser at apple.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

Turn on always-on scrollbars on macOS, and load https://github.com/pytorch/opacus/blob/main/tutorials/intro_to_advanced_features.ipynb

The content continually oscillates between two sizes, with and without the scrollbar showing. This resize is driven by a resizerObserver. Does not happen in Chrome.

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