Hover tooltip for world notifications display despite a panel being opened

When cursor is hovered on top of a closed stand, a little red notification is popped up saying "Not Activated! XXXXX Stand is not activated and will not operate."
This red notification will always pop up as long as there is a closed stand under the mouse, even if a window is opened (like the flight Planner for example)(Attached a picture of the problem. ClosedStandPopUp.jpg).