How to simulate a HMD in editor?

I’m developping a GearVR game and I can’t figure how to test the HMD movement in the editor.
I can’t use the mouse to move the camera in a blueprint because camera rotation is linked to pawn/controller rotation.

I can rotate the camera after packaging the game and running it on the GearVR but I can’t do it in the editor. I need to rotate the camera only, not the pawn.
I searched in the editor settings but I didn’t find anything.

I know you can Preview in VR, but I’m not sure if/how it would work for the GearVR. Have you tried that?

It would be nice but from what I read, it’s only for Rift/Vive
There should be another solution, like a keyboard shortcut to use the mouse to control a virtual HMD or something else.

My problem is that my HUDs are a 3D widget attached to my pawn so you can look to aim a button but if I bind my mouse to camera rotation in my blueprint, the widget is moving with my camera, so the widget interaction component is always pointing the middle of the 3D widget.

So there’s no other solution? I can’t bind the mouse to the camera because the camera in the editor doesn’t act like a HMD

Bump? I still need help about this

At least if someone from Epic could tell me if there is such feature in the engine so I can know if I should request it or not