General changes across model types:
- Fixed notes and boundaries missing after project load or switching shown diagram
(Onto)UML:
- Fixed errors when removing a class attribute or operation, then switching to other diagram showing the same class
BORM:
- Fixed constraints glitching after making a copy of a diagram
- Fixed nodes removed in one diagram not being removed in other diagrams
BPMN:
- Fixed diagram node positions not being saved or copied properly
- Fixed errors when diagrams with flows are loaded