Problem when switching skills

Please use the search button before opening a new thread as this subject has been discussed in a previous thread.

It's a season 8 client bug as @Gix explained here http://prntscr.com/bo1xvm (try the keyboard suggestion too).
Do Escape/Enter twice or a random left click action to get rid of it fast, some players have it once in a while and others may experience it more often. I know it's annoying sometimes but there isn't much we can do on our side unfortunately as it's client related only, new seasons don't have this bug as much as you see it in season 8 but the teleport + skill combo is blocked instead. We fixed many of the known client bugs but this one is more difficult to deal with, hopefully it will be fixed at some point otherwise the next episode will do it.

LE: I have corrected your thread title as the "switching" word was spelled wrong.