I've used Designer in Survey123 to create a field. This is what the resulting feature layer field looks like:
In a different feature layer, I'm creating a new text field from scratch:
Why is the Survey123 text field 255 characters long, but the new field from scratch is 256 characters long? To my untrained eye, that seems inconsistent.
Idea: Consistent default text field length in AGOL and Survey123
Great question! I've often wondered this too and never asked.