Was playing a PvP ground game. During the early part of the game, I suddenly became unable to use abilities or weapons.
Clicking fire puts a small green outline around the weapon but it doesn't work. Same for other abilities. I could move, open menus, remove my weapons, put them back et cetera. I died and respawned around 5 times (at all points being unable to contribute anything except move or anything) - and there wasn't an effect marked on the ui.
Now that I exited the PvP game, they're working again.
I'd like to know how to prevent/fix it if it happens again (had happened once before earlier).