Steps to Reproduce
https://zkfiddle.org/sample/6kigls/1-datebox-constraint-message-error-case
Current Result
Invalid constraint: before 20200308:????7?(?) (the constraint should be formatted in yyyyMMdd)
Expected Result
it's a valid constraint
Debug Information
the isValidConstraint method check constraint didn't consider the message(the string behind ":")
it take the "7" in the message as a date constraint