This was reported in this thread
There was a hot fix issued early March which fixed the bug for some but not all.
Someone in the forum said that switching the Home Cockpit option off fixed it; it did for me but only for a few days and then it was back, no idea why.
The bug is still present in the latest SU9 build and it only appears when using instrument view in any aircraft.
In “normal” VR view and if using the VR zoom function the cursor is normal but as soon as you switch to any instrument view the cursor appears double.
RX6800XT GPU
Reverb G1 headset
Using OpenXR toolkit.