Sim freezes when returning to main menu with inibuilds aircraft

Happened twice to me today - (out of two flights that completed) - once in A330P2F and once in the ATR.

The first attempted flight in the ATR had a CTD during climb - I was spinning around the plane in external view so that is most likely view change related. I have flagged that in a ticket but as no feedback is given I have no idea if it’s noted or tracked.