LibreWolf messes up time zones and makes scheduled content appear at unwanted times. That would normally be fine if there was a way to temporarily switch to your normal time zone in the settings for scheduled posts and chats, but they provide no way to do this without major tinkering in about:config (or whatever the experimental page is); that's why I returned to Wx, which, yes, has been nearly flawless so far.

If you use brew.sh, you can install Librewolf and it'll update whenever you update brew.