Description of problem:
required dynamic dialogs of integer type never free up the "submit" button

Version-Release number of selected component (if applicable):
5.10.8

How reproducible:
all the time

Steps to Reproduce:
1.create a dialog with a dropdown list using integer type. it must be required.
2.assign the dialog to a service
3.call the service
4.select a value in the dropdown menu

Actual results:
the submit button remains blocked and red text indicates that a value needs to be selected in the dialog, no matter what selection was made

Expected results:
making a selection removes the "required" effect and allows to submit the dialog

Additional info:
this happens if the dropdown list is dynamic or static but always using values of integer type.
production impact from the affected customer is missing from the case. will ammend later.