@razialaster you can move it using the VR controller. You need to use a VR controller to do it (i.e. the hardware controller that came with your VR set); you cannot move it with the mouse. Hover over its edges, using the VR controller (not the mouse), and you'll see that one of the edges lights up. Pull the trigger (or whatever button you use), and now you can place it in the VR world. It'll stay where you put it.
This works, but you'll have to do it literally every time you turn on VR, even if you temporarily disable VR in the same flight... I don't know how to avoid that yet.