Forum issues are a Jim thing not a Gromett thing sorry...
Firefox is now at v69.0 but doubtful if that would be the cause. Clearing your cache will probably remove passwords \ logins. I have Firefox set-up to do that every time I close and any previous login details have to be re-entered.I'm running Linux Mint 19 and Firefox 67.0. I tried rebooting whole PC. I rely heavily on saved passwords/logins for non personal/financial sites. Will clearing cache clear these login details?
I had a similar problem. I have a W7 install for when clients get a bug with my software that I can't replicate. Occassionaly I need to test on W7 to see if the same problem arises there.Rebuilt a dual booting desktop (Windows 7 and Mint 19.3) a week or so ago and yesterday could I get the audio to work at all? No I couldn't! So, out of Mint into 7 and it was working. Back into Mint and nope!
I regret to say Janine was right. Although it could have been an Apple user breaking into my house and sabotaging my PCCould it be an ID 10t problem?
oh I forgot about that as I use ALL the features of firefox before they are automatically applied by.I started to get the same problem, all video links on the forum had no sound. Hovered my mouse over the video and noticed that they were showing as muted in the video taskbar, even though my laptop was clearly showing as sound enabled and working in every other app. Usually when I turn the volume up on my lappy any video/app muting is automatically turned off but doesn't do it with embedded video links on the forum.