I'm having a curious issue copying text from web pages to my terminal (to copy and paste a command for instance). Ctrl-c/Ctrl-v have never worked with the terminal since there are the two separate buffers. However, when I highlighted text, it was automatically added to some buffer from which I can paste onto the terminal (with middle-click or shift+insert).
This doesn't work anymore.
Interestingly, however, it DOES work from the Firefox addressbar. So I can ctrl-c text from a webpage, paste it using ctrl-v onto my address bar, and from there the highlight/ctrl-insert works again.
Ah I've found the issue.
Firefox Clipboard.autocopy setting was off. I believe I turned it off some days/weeks ago in order to prevent the issue where Firefox seems to go back when you middle-click. That is controlled by Middlemouse.contentLoadURL but I think I turned off both.