Got the same Problem.
While form is in view mode I can see the values from selected gallery , if I try to set the form in edit mode , it stucks in getting Data.
Funny Side on that failure it only get Stucks when:
- Fullscreen Mode of that App (Editor "Run" or normal Run of the App)
- only in Environment Production (in my Case Test / Live)
When i make the complete same Procedure in (than the Form shows all Values correctly):
- Editor Mode without running in Fullscreen
- Dev Environment
security roles in dataverse are set correct.
Try error handling about hours yesterday which breaking my head.
Honestly replace the form is a not a way to handle that fail because it's a bunch of work in that with additional field in data cards.