for me the bug happened after the server maintenance (10:30 CEST). Before I was fighting a mob. (Edit: server Tir Na Nog)
Directly after the server maintenance login queue waiting time and login the interaction wit E or T didnt work anymore – everything was as usual (like the display ” E Read, T put into journal” or “E Loot T look at loot).
But M for map worked, unlike others as I read.
Alt+tab, tab and tab, changing keybindings,… i dont know what else i tried before the “relogging”.