I’m sorry for saying this, but I’m incredibly frustrated. I wish I could do a project without crashes or weirdness, this passion project of going a different affordable BIM route is starting to look more expensive than getting working software, I’m spending hours a week solving stupid issues instead of designing.
I’ve been able to reproduce the issue. The problem is that VisualARQ modifies the object, and BoxEdit tries to compute the bounding box when the change is not finished yet.
I’ve fixed this issue in Rhino 6.11, which will be released in a month.