topic Severe audio bug on Twitch: old/initial audio track overlays live stream after pause (Firefox 158+) in Discussions https://connect.mozilla.org/t5/discussions/severe-audio-bug-on-twitch-old-initial-audio-track-overlays-live/m-p/144832#M59292 <P><STRONG>Description:</STRONG><SPAN> On Twitch streams,</SPAN><SPAN> after pausing and resuming playback,</SPAN><SPAN> an old audio track (often the very first segment of the stream or a heavily delayed buffer) gets overlaid on top of the current live audio/video track,</SPAN><SPAN> or completely replaces it.</SPAN></P><P><STRONG>Steps to Reproduce:</STRONG></P><OL><LI><P><SPAN>Open any live stream on Twitch using Firefox (version 158 or higher).</SPAN></P></LI><LI><P><SPAN>Pause the stream for a short moment.</SPAN></P></LI><LI><P><SPAN>Resume playback.</SPAN></P></LI><LI><P><SPAN>Observe the audio overlap or incorrect audio segment playing.</SPAN></P></LI></OL><P><STRONG>Environment &amp; Troubleshooting Tried:</STRONG></P><UL><LI><P><STRONG>Firefox Versions:</STRONG><SPAN> 158+ (affects all recent versions).</SPAN></P></LI><LI><P><STRONG>Forks:</STRONG><SPAN> Reproduced on Firefox-based forks as well.</SPAN></P></LI><LI><P><STRONG>Extensions:</STRONG><SPAN> Occurs with all extensions disabled (Troubleshooting Mode) and enabled.</SPAN></P></LI><LI><P><STRONG>Hardware Acceleration:</STRONG><SPAN> Reproduced with both hardware acceleration enabled and disabled.</SPAN></P></LI><LI><P><STRONG>Low Latency Mode:</STRONG><SPAN> Reproduced with Twitch low-latency mode both enabled and disabled.</SPAN></P></LI></UL><P><SPAN>Due to these tests,</SPAN><SPAN> it appears to be an engine-level media/audio regression.</SPAN></P><P><STRONG>Impact:</STRONG><SPAN> Watching live streams on Twitch has become practically impossible on Firefox.</SPAN><SPAN> This severely degrades the day-to-day user experience and forces users to look for alternative browsers.</SPAN><SPAN> Please investigate and fix this media pipeline regression.</SPAN></P> Sun, 25 Oct 2026 11:15:48 GMT asdled 2026-10-25T11:15:48Z Severe audio bug on Twitch: old/initial audio track overlays live stream after pause (Firefox 158+) https://connect.mozilla.org/t5/discussions/severe-audio-bug-on-twitch-old-initial-audio-track-overlays-live/m-p/144832#M59292 <P><STRONG>Description:</STRONG><SPAN> On Twitch streams,</SPAN><SPAN> after pausing and resuming playback,</SPAN><SPAN> an old audio track (often the very first segment of the stream or a heavily delayed buffer) gets overlaid on top of the current live audio/video track,</SPAN><SPAN> or completely replaces it.</SPAN></P><P><STRONG>Steps to Reproduce:</STRONG></P><OL><LI><P><SPAN>Open any live stream on Twitch using Firefox (version 158 or higher).</SPAN></P></LI><LI><P><SPAN>Pause the stream for a short moment.</SPAN></P></LI><LI><P><SPAN>Resume playback.</SPAN></P></LI><LI><P><SPAN>Observe the audio overlap or incorrect audio segment playing.</SPAN></P></LI></OL><P><STRONG>Environment &amp; Troubleshooting Tried:</STRONG></P><UL><LI><P><STRONG>Firefox Versions:</STRONG><SPAN> 158+ (affects all recent versions).</SPAN></P></LI><LI><P><STRONG>Forks:</STRONG><SPAN> Reproduced on Firefox-based forks as well.</SPAN></P></LI><LI><P><STRONG>Extensions:</STRONG><SPAN> Occurs with all extensions disabled (Troubleshooting Mode) and enabled.</SPAN></P></LI><LI><P><STRONG>Hardware Acceleration:</STRONG><SPAN> Reproduced with both hardware acceleration enabled and disabled.</SPAN></P></LI><LI><P><STRONG>Low Latency Mode:</STRONG><SPAN> Reproduced with Twitch low-latency mode both enabled and disabled.</SPAN></P></LI></UL><P><SPAN>Due to these tests,</SPAN><SPAN> it appears to be an engine-level media/audio regression.</SPAN></P><P><STRONG>Impact:</STRONG><SPAN> Watching live streams on Twitch has become practically impossible on Firefox.</SPAN><SPAN> This severely degrades the day-to-day user experience and forces users to look for alternative browsers.</SPAN><SPAN> Please investigate and fix this media pipeline regression.</SPAN></P> Sun, 25 Oct 2026 11:15:48 GMT https://connect.mozilla.org/t5/discussions/severe-audio-bug-on-twitch-old-initial-audio-track-overlays-live/m-p/144832#M59292 asdled 2026-10-25T11:15:48Z Re: Severe audio bug on Twitch: old/initial audio track overlays live stream after pause (Firefox 158+) https://connect.mozilla.org/t5/discussions/severe-audio-bug-on-twitch-old-initial-audio-track-overlays-live/m-p/146666#M60175 <P>I'm experiencing the same issue on Firefox 159.0.1 on Windows 11. It happens even without pausing the stream. Twitch randomly freezes, then old audio from several minutes/seconds earlier starts playing over the live audio. Refreshing temporarily fixes it, but the issue eventually returns.</P> Tue, 10 Nov 2026 12:27:23 GMT https://connect.mozilla.org/t5/discussions/severe-audio-bug-on-twitch-old-initial-audio-track-overlays-live/m-p/146666#M60175 Praydan 2026-11-10T12:27:23Z