Scenario: You have a PowerApp with an Edit form (2) that is selecting the item to be edited from an adjacent Gallery (1)
Issue: When there are no items in the gallery, the form displays a “Getting your Data” message, which can be confusing to users.
Solution: Create a label, covering the full screen. Give it a Fill and some text notifying users that they have no items to edit. Change the Visible attribute of the label to the formula: CountRows(Gallery1.AllItems) = 0
While the gallery has no items, users will now see the covering message.