If you have a single level floorplan with floorplans for Groups, and a Panorama menu which just shows just groups - with no submenu for panoramas within the group - then when you select a group in the Panorama menu the Floorplan changes to match the selected group - screenshot 1.
But if you also have a submenu for panoramas then the Floorplan doesn't change to match the selected group until you select a Panorama from the submenu - screenshot 2.
When you're over or click on the group ? Submenu appears and group doesn't change ? If yes it's not an issue, Submenu is displayed but no action is sended for selected group until the select of an item into the submenu.