The customer tried to create customization that hide the add filter button on the filter panel, but they couldn't hide it. When they check FilterDisplayControl class in the source code of D365FO, it seems that they can achieve it by passing false to parmShowAddFilterButton method, but even if false is actually entered in parmShowAddFilterButton method, they cannot hide the add filter button. Therefore, we hope this method will be fixed so that we can customize it to hide the add filter button.