sharepoint online – Power App form connected with Azure AD group not saving on submission to SP list

So I have a Power App form that is connected with Azure AD group and pulls group members and populate my drop-down as a choice. Before this implementation the drop-down was searchable and it was populated from SharePoint Group.
The issue I’m having Now is, after switching from SharePoint group to azure A.D. group whenever I submit this form the drop-down field is not being saved into SharePoint list, previously it was saving in SharePoint list.
Is there some additional logic I need to add or I’m missing when switching to Azure A.D group to populate my drop down?
Please let me know if I need to add additional information to clarify this question.