protegeproject
Creating a top level object or data property does not work well if owl:topObjectProperty or owl:topDataProperty is not selected
In the "Property Hierarchy" view, it is possible to create a top level object property, in the "Object Properties" tab, if no property is selected (one can unselect even the topObjectProperty, by holding down the <CTRL> key). In such cases the property seems to be created (we do get a notification in the "Project Feed" view confirming the property creation, and we can also use the property in class descriptions, without receiving a warning), but the newly created property does not appear anywhere in the property tree.
The same problem appears when creating a top level data property in the "Data Properties" tab, if the topDataProperty is not selected.
As a workaround: A browser reload seems to show all the properties, including the ones that were created without selecting the owl:topObjectProperty or owl:topDataProperty properties.