Something missing on my wordpress

Hello..

i realize that something was missing on my website.. usually, when we move a cursor to admin dashboard, it will show/popup the details on it.. but right now on my site it’s gone.. how can i fixed it?

when i click, it will show.. but when i move my cursor to the panel, nothing show.. please take a look the video https://watch.screencastify.com/v/Vwlfp9HF68bDgCXTlQ2K