i have firefox 99.0.1 64 bit in a linux system. i see fail in play of sounds. videos plays well, youtube, soundcloud and others play well, the thing is the play of sound only, in for example dictionary sites for example in wiktionary in the page Europe sometimes audio plays well the first time, but it sticks at the beginning of play in replay. if i play it in loop in this page https://upload.wikimedia.org/wikipedia/commons/4/46/En-us-Europe.ogg it plays well but again in playing it one time it sticks in the page english (see the small letter) of the same site as it is not changed to the new control bar i go to menu > players where i have the html5 and javascript options, failing the former and doing well the latter, so you may think the fail is in html5, but in this page http://atticgreek.org/pronunc/sigmaU.html inspecting the page i see that sound works by javascript and i have a similar fail as the first word nósos plays well but the second présbeis again plays only the beginning and sticks