VR change from 4.11.2 to 4.12.1

in 4.11.2 I could open a new fp project template, build to windows, run that build it would play in windowed mode, then for VR I would hit Alt+Enter, everything worked fine by default.

in 4.12.1 I open a new fp project template, build to windows, when I run that build it is fullscreen, the for VR, Alt+Enter does not work.

How can I get my VR working again?

The only way to go into VR mode in 4.12+ is with “stereo on” in console or launching your game with -vr. CV1 has a proximity sensor and will not start rendering to HMD unless you have it on (or have your finger infront of proximity sensor)