Context menu (right mouse button) does not work with RD client on iPAD when touchpad is connected

This is my configuration:

Apple iPAD 11“, 3rd generation

Logitech Combo Touch, KeyboardDock for Apple iPad Pro 11"

When I connect with the RDP Client App to a windows machine then I can use the context menu (right mouse click) with the touch screen of the iPAD (long touch) but not with the touch-pad of the Logitech Combo Touch Keyboard Dock.

Please can you add this feature. Best regards, Johann Stieger