Ok, got even stranger, suddenly an hour later the side panel wasn't working either, I tried upgrading my drivers and I have been working for a couple of hours now without issues.
I'm on a PC by the way with a 1070 and a Ryzen7, I did try resetting the UI with no luck, it seems that changing the Nvidia did the trick tho.
Now I'm working with fear that the bug happens again, not having the option to input textures could halt my project