Describe the bug

The implementation of the SYSML object node does not allow an element type to be assigned.

To Reproduce

Steps to reproduce the behavior:

1. In the SYSML profile, add an object node to a diagram
2. Inspect the properties - try to assign a type

Expected behavior

A type drop down in the element properties panel.

Screenshots

OS

• Linux (Please put in notes the specific distro)
• macOS
• Windows

Version

Version of Gaphor: 2.27

Additional information

Add any other context about the problem here.