Custom Sirius property pages are not visible in diagram editor

[Yuri-Blankenstein-TNO]

I'm trying to register custom Sirius properties tabs to easily provision properties that are declared in my UML profiles, but the diagram editor in UML designer doesn't show my registered tabs in the properties view. However, when I select the same element in the Model Explorer, my properties tab does show. You can reproduce this issue on any UML model, using the attached plugin my.project.design.zip.

[Yuri-Blankenstein-TNO]

Commit TNO@914c68d removes the Properties tab filter, allowing customizations.