Label element has not options for child elements

Wappler Version : 3.5.6
Operating System : mac
Server Model: node
Database Type:maria
Hosting Type: remote

Expected behavior

A label element should have valid options available as children

Actual behavior

When attempting to add a child:

Screen Shot 2020-12-02 at 9.52.25 AM1538×938 31.8 KB

However you can drag (in code, but also sometimes in the UI) some elements inside:

Screen Shot 2020-12-02 at 9.54.06 AM740×304 22.5 KB