Please give the annoying popup page a shortcut to close, e.g. ESC

everytime i want to write something, i’m used to move mouse aside. but the page links are too easy to be pointed and thus it will popup a minipage on top.

it’s really annoying, and cannot be closed by pressing ESC. the only way to remove the popup is to move the mouse again and again until pointing the blanks.

wasting time, i could not bear it. please add a shortcut for it. many thanks!