MIRA: Status cells are also editable where they should not
The RequirementsOverviewFXEditor allows to open a combo to select a "status" for all elements in the tree - even root nodes or containers.
- Open Simple Traffic Lights example
- Double click "TL Requirements" -> Overview Editor should open
- Try to edit the Status of "All elements", "Requirements", "All Glossary Entries" and "Glossary Entry"
Observe: There is a combo box opened
Expected: Those cells should not be editable, sincethey do not have a "status" - only Requirements do.