Firefox Community Forum

In firefox developer edition, when opening a new window of any kind, or when relaunching/opening the app, the new tab button always ends up on the left hand side. Going to the customization menu, I can move the button to the right side (next to the last tab), which is where I prefer it, however when opening any new window the button goes back to the left side

After finding out Firefox was storing over a gigabyte of cookies, I figured it might be wise to set it up to clear them except for sites I used regularly. However, I've recently noticed that Youtube will clear regardless. I've tried entering the domain both as youtube.com as well as www.youtube.com, but my video display preferences aren't retained. This doesn't happen for other sites, like Reddit or Tumblr. What do I need to enter in the exception list to keep my settings?

I just switched from Ubuntu 22.04 to Fedora 40 and copied my files over, including my Firefox profile and KDE settings. I have hit a few snags, such as that the language setting is totally ignored, but the most annoying is that the addess bar stopped autocompleting URLs I type and instead just flickers the suggestions popup away whenever I type. I tried troubleshooting mode and for every new tab the autocomplete works once but once I type the second letter it flickers the suggestions away again and doesn't work. To me it looks like the issue is that the suggestions popup maybe messes with the window focus as I noticed that menus and such seem to be implemented as borderless windows in Firefox. I also tested it in about:home using the search box there (which redirects your input to the address bar) and in there the first typed letter also autocompletes and after that each new typed letter just flickers the suggestions away for a split-second.

Incase it helps, I installed firefox-dev from the4runner's COPR "firefox-dev"