How to get cursor location in world space in VR?

Using GetHitResultUnderCursor yields the wrong world-space location when playing in VR (see screenshot).

What I want: the user using the PC (keyboard+mouse) to be able to interact with the world by using the mouse, while another player visualizes it in VR.

This bug happens both in VR Preview and in a packaged game.

Any other suggestions / workaround?