Hi,

Does the issue persist in other browsers (such as Chrome, Edge, Opera or Safari)?

Also, could you please give the URLs of some of such websites?

Here's an example: https://boardgamegeek.com/boardgamepodcast/25985/shut-up-and-sit-down

The 2024’s Best Games podcast down the page which is the longest at 1:03h triggers the 'shortening' of the volume bar, everything else has the volume slider. Another example more clearly here: https://boardgamegeek.com/boardgamepodcast/25780/adeptus-podcastus

In Edge for example, the UI is different, with hover-over the volume/mute button reveals a volume slider to the left 'over' the scrubbing timeline, and is consistent across all lenght implementations.

Thank you for giving the examples, that's definitely a compatibility issue. I've been able to reproduce it and have reported it on Webcompat. The team will look into it, and I'll keep you updated.

As a temporary workaround, you can right-click the audio control, select Copy Audio Link from the context menu and open it in a new tab.

I've also reported it on Bugzilla, so that it sooner reaches the right team.