Turn off "AutoSubmitting":
{"first" -> <|"Interpreter" -> Restricted["Integer", {1, 9}], "AutoSubmitting" -> False|>, ... }
See FormObject documentation and also this Wolfram Community answer.
Thank you! That worked. Had I known AutoSubmitting was default true, I'd have thought to try this first.
Not only did you help solve my problem, you also helped me better understand the full Association spec for FormObjects.
Much appreciated!
