[REG: QtCreator 10 -> QtCreator 11] QtCreator / SCXML_Designer crashes with onEntry/onExit and internal transitions

Regression from QtCreator 10 (working, no displayed onEntry/onExit events) to QtCreator 11 (broken, displayed onEntry/onExit events)

QtCreator 11 crashes when trying to view StateMachines in the SCXML-Editor with onEntry/onExit events and internal transitions in the same state.

QtCreator 11 also crashes when trying to add onEntry/onExit events to states with internal transitions (and vice versa) in the SCXML-Editor.

Either:

• Add an onEntry - send event to the attached statemachine in the SCXML-Editor
• EXPECTED: onEntry event and internal transition shown together in State_1

• ACTUAL: QtCreator crashes

Or:

• Create a new StateMachine
• Add a new state (automatically State_1)
• Add an onEntry - send event
• Add an internal transition (transition from State_1 to State_1)
• EXPECTED: onEntry event and internal transition shown together in State_1

• ACTUAL: QtCreator crashes

possibly due to https://bugreports.qt.io/browse/QTCREATORBUG-17378