Mandatoryontransition configuration making the customfields duplicate

Hi Team,
I configured some custom fields so that they are to be filled mandatory before resolving a ticket and I am seeing while resolving the ticket the fields are coming two times . When we are filling value to one custom field the other duplicate field in being updated and vice versa.

Please note I have added mandatoryontransition plugin and configured it in the file. Please let me know if any one knows the solution for this.

Hi,Anyone faced the same issue and having any update, how to resolve this