Changing an external transition with triggers to an internal transition results in loss of transition's name on the statechart diagram

Symptom

Steps to reproduce:

1. Create a UML project and UML model
2. Add a state machine diagram
3. Add a state onto the diagram
4. Add an external transition to the state and give it the name myTransition1
5. Add a guard condition to the transition with, for example, x=1 as the expression
6. Add a change event to the transition
7. Deactivate the Window > Preferences > UML Diagrams > State Machine > Show Internal Transition Name Only checkbox and click Apply & OK
8. Click the external transition on the diagram and change its Properties > General > Kind value to Internal

Expected Result: The resultant internal transition appears the same as the external transition. From Step 7, you want to show not only the internal transition name within the state, but also its guard condition and its event.

Actual Result: The resultant internal transition's name is hidden on the diagram and the guard condition appears after the event. It is not possible to display the internal transition name or place the guard condition in the correct spot in front of the event.