I have a form with Default and PM form sets - the PM form set is for the project managers.
I set up a communication site, and placed the Project Managers 'Security Group' nested inside the 'Site Members' group and 'Everyone' i.e. the non project manager users, in the 'Site Visitors' group.
I've then updated the form sets in Plumsail to point the PM form to the members group and exclude the visitors group, however all Project Managers are still seeing the Default form set. If I directly add members into the SharePoint Group then the added members can see the PM form as expected.
Is there an issue with Plumsail Forms which means it does not support Security Groups, I have also tried this with Mail Enabled Security Groups and they don't work either.