Bugfix
Detail
#27424
"Container" for new grid line not mandatory, but hidden NPE when value is deleted
The problem is that a table grid usually does not need/have a container for displayed objects. But with your tree grid it is different, without container the newly created object is usually not displayed anymore. But the handler "new row" is the same in both cases.
Minimum requirement: You can't break the view if you delete the expression "container".
Test
- /com.top_logic.demo/src/test/java/test/com/top_logic/demo/scripted/model/attributes/composition/TestCompositionContext.script.xml