(vou postar em inglês porque vou fazer crosspost, mas no @Linux Brasil pode responder em português)
After recently Firefox update I noticed that audios are cluncky. I mean, if my Firefox isn't playing any sound, if I start a video or any sound start playing (whatsapp notification, for example) it doesn't work at first. For example in videos, I have to pause and unpause the video to the audio start playing properly.
Is anyone experiencing something similar?
Is there anything I can do to solve this issue?
I tried another browsers and another sounds in OS and it doesn't happen, what makes me think it's not an OS bug, but a Firefox bug.
Does it also still happen in fresh profile? It will be like a factory-reset Firefox (except that you can go back to your current profile), so then it definitely wouldn't have anything to do with your Firefox configuration.
Creating a new profile, as suggested, seems to solve the issue for my main profile. That's interesting, cause I think it shouldn't solve the issue at all, once I did not change anything at the main profile
Hmm, yeah, it is a bit surprising to me, too, especially for an audio issue, but it's always possible that you had some weird configuration values in about:config for historic reasons and now some new code, that came in with a Firefox update, isn't working with that configuration.
Either way, it happens often enough that Mozilla has a troubleshooting routine for it, too, namely refreshing your profile.
If I remember correctly, it places your old profile data into a folder in your Desktop folder. But you can also separately backup your profile by closing Firefox and then copying ~/.mozilla/firefox/ onto an external hard drive or such.