After muting a tab in Epiphany, unmuting the app does not restore sound. The user needs to refresh the page or navigate to a different page in order for sound to return. See: https://gitlab.gnome.org/GNOME/epiphany/-/issues/1958
Here in MiniBrowser on Fedora 37, with pipewire-pulseaudio I can mute and un-mute a webview once and afterwards whatever I do, without going to the GNOME sound panel and un-muting the WebProcess, the WebView remains muted. I have a patch fixing this and then I can reliably mute/un-mute tabs.
Pull request: https://github.com/WebKit/WebKit/pull/11419
Committed 261635@main (7e9d65f61a53): <https://commits.webkit.org/261635@main> Reviewed commits have been landed. Closing PR #11419 and removing active labels.
<rdar://problem/106706926>