Using this method I’m unable to bring to VR SkyDemon and Pilot 2ATC. Both apps display kind of “startup” window before opening the main app window, this is probably the reason.
EDIT: I managed (Reverb G2) to have one classic app window in MSF2020: when startting the app in the WMR Portal (the “cliff house”) the “focus” must be in the headset (by Win-Y). Then the app for which “follow me” (icon in the upper-right corner of the app window) option was selected will appear in MFS2020. While VR controller are not normally visible in MFS2020, when the “follow me” app is visible in MFS2020, the controller becomes visible when pointed at the app window and can be used to fine tune app window positioning.
The mouse moves seamlesly betwen the cokckpit (MFS “3d mouse”) and the app. In the app the mouse is a bit erratic, however I don’t use the MFS 3d mouse, as I have all necessary switches and knobs bound to physical switches/buttons/encoders.
I tested it so far during 15 min. flight with SkyDemon and at some point it dissaperared (with some strange message from WMR about “slate” and “immersive application” if I remeber correctly),
I wil continue investigting with SkyDemon, Pilot2ATC and OneNote (as a kneeboard on which I can have images, pdf files and I can make some notes with my Wacon tablet laying on my lap).
It’s not as good as the options available under SteamVR, however for mee the native OpenXR drivers provide smoother FPS compared to Steam implementation of OpenXR.
EDIT 2: Unfortunattely, SkyDemon is being stopped after ca. 10 min. with the error message from WMR saying the “slate app” (SkyDemon) is not compatible with “immersive application” (MFS2020).