Sometimes when you play your game does not show the cursor since you are still on moving-camera mode, and sometimes after you die in PvP your camera bugs and stop moving - this may be a combination of both. Did you try pressing . to get your cursor back on the screen after you died?
i have a cursor, clicking just does not work after dying sometimes.
but i will try it next time when it happens
but weapon swap also doesnt work, on middle mouse or on tilde key
all other keys seem to work.
currently i alt tab, force game close and restart, since you cant exit the game without clicking the mouse
i thought /reloadui doesnt fix it but i found out that doing it a few times sometimes does fix it
i think its because i left the keep ( loading screen) and then tried again with /reloadui that did fix it that time
5 minutes later i died and again i had this bug
i have played many MMO's in the last 15 years, this one has by far the worst customer service