VR mouse cursor jumps away from the knob I'm using if I turn my head

Hard to say who is at fault here, the sim or the HMD, but I agree. It’s a bad design. The mouse pointer shouldn’t move unless the mouse itself moves. Trying to adjust altitude in the Kodiak is a tedious affair in VR because you can’t see the knob to hold mouse focus while watching the numbers change on the PFD 18” away.

Plus sometimes the mouse just jumps off the control as you’re using it.

It’s designed this way so you don’t lose the mouse as you turn your head, but that could easily be fixed with a reset key to recenter it instantly if you need to.