Firefox Quantum has problems with its in-browser music player
You know how Firefox's in-browser music player used to look like this? https://imgur.com/7M17XsH It was very easy to use and also quite nice to look at.
Somehow after updating to Firefox Quantum, the in-browser player looks like this. https://imgur.com/nW5oVup And I really do not think this is supposed to happen. I can't even pause or navigate the audio files anymore since there isn't anything to click! ...This honestly seems like a bug that needs to be fixed.
Opaite Mbohovái (1)
It looks like the in-browser music player is not styled properly. You probably already tried if restarting Firefox in safe mode helps, if you have the same problem in another Firefox Quantum installation (if you have multiple computers) and if reinstalling helps. Right? If you haven't, please do so. If you already have, it's probably best to file a bug on https://bugzilla.mozilla.org/ or ask the same question on the English side https://support.mozilla.org/en-US/ because there is probably no one on this side who can help you with reporting the bug.