Validation in 17.2 with an a!formlayout_17r1() object

We are having a validation issue in the formlayout_17r1 component.  We've upgraded to 17.2 on one of our on-premise environments.  Some of our SAIL forms disable the submit button until certain fields contain 'correct' values.  The associated code worked fine in 16.2 through 17.1, but now after a 17.2 upgrade, even when everything is correct, the Submit button is not activated.  Has anyone had similar issues, or can they offer guidance on what might be different between a 17.2 instance of a!formlayout_17r1() and a 17.1 instance of a!formlayout() ?  

We effectively have to halt our upgrade until we can resolve this.

 

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