Sky4Sim NG caused a system freeze

This is a bug I first noticed at least a couple of months back but never got around to reporting for a variety of reasons. Since then Win 11, Sky4Sim, MSFS and RTX driver have been updated but the problem (see below) is still there.

The problem: When I try to load the flight plan the VR headset (Reverb G2) image goes blank (black) while the monitor screen freezes (still showing the VR view) with a small message box in the middle stating (hard to read as so small) “… do you really want to load your MSFS flight plan …”, or words to that effect. The only way out, that I’ve found, is to reboot. Note that the first few months I used Sky4Sim NG I had no problem.

Anyone else have, or had, this problem?

Reverb G2
RTX-3900
Intel CPU
Win 11