My application does not show up in the ALT-TAB task-switch window, when a dialog is open, if the open dialog is started from another dialog, that is modeless.

Otherwise my application is connected to the ALT-TAB functionality and shows up properly.

Does anyone have a clue as to why my App isn't detected in the ALT-TAB window when sub-dialogs are opened from a modeless dialog?

Any suggestions most welcome!