Add a Two Column component to the page
Observe that in the Layers view on the left, the column_one and column_two Slots do not render as children of the Two Column component.
Note: The Two Column component that is in the layout by default when loading the page is working correctly, it's only new components that appear to exhibit the issue.
I believe that when adding a new component to the layout the layoutModel data for the new component does not have the slots added as children.
Closed: duplicate
Page builder
Closing as duplicate of 🐛 Adding a component with slots does not register the slots as children Fixed