Studio 7 - missing hierarchyProperty in Properties of TreeTable

Hello,
I can’t find the setting in the Designer-Properties for the hierarchyProperty of the tree-Table.
When creating the Screen from scratch there is a property.

Auswahl_110

But afterwards it is missing.

This is a problem when placing a tree table on an empty screen.
The only possibility is to edit the property in the xml-Text file:

<treeTable id="workTimesTable" width="100%" dataContainer="workTimesDc" hierarchyProperty="parent">

Or am I searching at the wrong place?

Thanks
Manfred

Thank you for reporting the problem. We have created a YouTrack issue.