Hi, I have problems with totem switch while in combat.

pop up key = no key -> I can't modify my set while in combat (pop up, select with right click). I can still summon other totems in combat (pop up left click).

pop up key = CTRL -> I can't modify my set while in combat (pop up, select with right click). I can't summon other totems in combat (pop up left click).

This is intended. You can not change them during the fight.
If you do this in options menu, you will get a message in the chat window. I will add this message for right click in the next version.