3822044 - Why is the Group button grayed out in Process Reports page when the Expense Processor already has multiple user groups assigned?

As an Expense Processor, I have multiple user groups, including Global access assigned already, but why the Group button in Process Reports page is still greyed out?

The Group button in Process Reports page is greyed out but the expense processor already has multiple user groups assigned. , KBA , CON-EXP-ADM-WFL-WL , Workflow , Problem