[Webkit-unassigned] [Bug 281024] New: Paused autoplay videos sometimes continue to play

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=281024

            Bug ID: 281024
           Summary: Paused autoplay videos sometimes continue to play
           Product: WebKit
           Version: Safari 18
          Hardware: Mac (Apple Silicon)
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: opendarwin at lapcatsoftware.com

Created attachment 472854

  --> https://bugs.webkit.org/attachment.cgi?id=472854&action=review

Sample HTML demonstrating the bug

Steps to reproduce:
1. Open the attached HTML file in Safari

Expected results: The video pauses.

Actual results: The video continues to play.

The bug doesn't happen every time. Keep reloaded the HTML until it happens.

Note that after paused() is called, the JavaScript paused attribute is true, and the video controls show the paused state. Yet the video continues to play.

I can reproduce this bug in Safari and Safari Technology Preview on macOS. I've haven't been able to reproduce the bug on iOS.

This bug affects a feature of my Safari extension StopTheMadness Pro in the Mac App Store.

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