I'm trying a very specific problem that started occurring practically out of nowhere. Basically I am unable to use Firefox Developer Edition outside of the Gnome environment.
I used to use it together with Cinnamon, but for some time now, when accessing the browser, many of the features related to arrow keys, backspace, among others, do not work as expected.
In search and select boxes, I cannot use the arrow keys to navigate, hindering both leisure time when watching YouTube, for example, and my work as a Front-end Developer. I even bought another keyboard thinking it was a hardware problem, I installed Debian thinking it was a problem with Ubuntu, but unfortunately for me the problem persisted.
Basically, if I log in first to Ubuntu/Gnome and then switch to Cinammon/KDE, Firefox Developer works normally, but if I log in by default to the others, Firefox simply doesn't work as expected. I really don't know what to do other than consider abandoning Firefox Developer Edition. The standard version of Firefox works normally.
If anyone has any idea what it could be, I'd appreciate the help!