InputInjection not waking display in assigned access mode

Question

Hi,

I have an UWP app that needs to manage the display. I am already able to switch the dispaly off using P/Invoke of the "user32.dll". However, sadly, one cannot switch the monitor on again using this method. My display briefly turns on and off without ever displaying something. The agreed workaround in the community seems to be to simulate some kind of input to the system to make it switch on the display itself. This works fine on my regular Windows administrator account using this code:

                InputInjector _inputInjector = InputInjector.TryCreate();
                _inputInjector.InitializeTouchInjection(
                    InjectedInputVisualizationMode.Default);

                InjectedInputMouseInfo info = new InjectedInputMouseInfo();
                info.MouseOptions = InjectedInputMouseOptions.Wheel;
                unchecked
                {
                    info.MouseData = (uint)-500; //scroll down
                }

                _inputInjector.InjectMouseInput(new List<InjectedInputMouseInfo> {info});

When I try to run the app in assigned access mode though, the display doesn't get switched on anymore. I've already tried whether it is possible to use input injection in assigned access mode in general, which works absolutely fine. However, I think that the injected input (with the display switched off) is handled differently by Windows when in assignes access mode. Can somebody elaborate this with the Windows team? Is this to be expected, and if so, is there any other way I can wake the display from a UWP in assigned access mode?

Thank you very much in advance!

Kind regards
Richard