Version 3.13.251 of Connect. I'm seeing the error in Mozilla, Chrome, and Edge. Safari on iPhone is not showing the error. I added the locale/language columns for English and Spanish as one of my first steps creating the form, and didn't notice the "hubErrCheck.inputFormatInvalid" error message until a couple of days ago.
I don't think it has anything to do with the locale/language feature in survey123, but I'll try removing those columns and see if that solves anything. Nevermind... I just removed the language columns, and the error went away, and it says "Input format not satisfied" like it should, when a user begins filling in the masked field.
By the way, is there a way to customize the error message for input mask?