Tooltip size change

[Silkt]

The tooltip under the mouse cursor seems to randomly change size to a massive black bar with a huge font that doesn't always disappear when the mouse cursor does. It seems like it can appear after porting or having a UI open then closing it by hotkey, I can clear it by opening the inventory and moving the mouse to the inventory and back out again. When you are half dead after being attacked before you spawn from porting, you don't need some big opaque black bar in the middle of your screen telling you "YOU ARE IN COMBAT" or "YOU HAVE USED XX OF YOUR XXX INVENTORY SLOTS"

Is there a setting change to fix this or is it some bug in the UI?