Why does the alias info popup stay visible after moving the mouse
The alias info pop-up shows the contents of an alias being used on rules. This box has an Edit link to allow quickly navigating to the alias to make changes.
As a consequence of that, the behavior of the box may be unexpected with respect to how and when it disappears. The box stays up until the mouse is moved over the pop-up and then away from it.
If the pop-up is in the way, move the mouse pointer inside the pop-up box and then outside the box and it will then disappear.