Regarding the High Vizier set, is it BiS b/c of the debuffs it provides? I noticed it doesn't have any crit or ArmPen, which is what this guide suggests is most important.
I found this happens to me too after a while. It works fine then when I have to idle for a bit and come back, my controller has turned off. When I turn it back on it seems that no tool tips are displayed anymore when selecting them. I have to completely close the game and restart it to fix it.