ASK: Add a "X" or small close button in top right of "Used in Formula" popout to temp disable it from displaying.
EXAMPLE: Cells which have values used in other formulas will display a popout when selected. The popout that appears is dynamic it will often float overtop of a drop down list covering up the of the first choices. This prevents the user from being able to select the choices until it fades or the user repositions the screen to shift the popout away. Ability to close this box would be a great short term fix and a long term feature to disable the "formula used in" popout across the sheet would be another welcomed change.
