I was surprised to still be getting the issue today and I may have identified the issue most of us have.
I previously had readOnlyHint: True because in testing I didn’t have auth setup.
I then started applying auth and still had readOnlyHint: True set.
IT worked for days, but I think the newest updates caught that
so by setting:
readOnlyHint: False
I started getting the confirm flow again. Check your code for this or set it if you still have the issue.**