BUG REPORTX2Chat cut off in lobby

I am absolutely Sick of the the Chat bar being dropped everytime somone joins a lobby this is my second post about it, I just started a game premautrely because of this bug, EVERYTIME SOMEONE CHANGES A SLOT, OR JOINS OR LEAVES THE LOBBY IT CUTS THE CHAT OFF , AND I HAVE TO PHYSICALLY CLICK THE BAR, TO CONTINUE TYPING EVERYTIME, I DONT KNOW WHY YOU CANT JUST FIX THIS.