Problems with stability of trimming in Maxsurf Modeller V22 update 1

My models keep losing their trim when I move surfaces even slightly. Also after saving an exiting, then reopening the model the trim is all screwed up. This is very time consuming and frustrating, not what I would expect from such an expensive and high end programme

Also the application now always starts with trim set to visible which isn't a major problem but being able to change this would be good.