Hi
I am sure you are creating apps from either CDM, Excel or something other connection.
Sometimes, PowerApps takes time to save & then show the edited text.
- Please try again to edit, and no matter what shows up in the Results Page (View), please go back to the Gallery to see if it has been updated.
Let me know what happens and hope it works again.
(as I know, and it happened to me before, error due to you hit on transient time which resulting in no-connection to server)
Hope it helps.