PVMT Diagram Styler properties not displaying on diagram

When I first activated the diagram styler layer and used the palette to show the property block on the diagram, it worked. However, when I updated the property configuration, the blocks diappeared.

No matter how many time I try re-applying it from the palette, restarting Capella, or re-enabling the diagram styler layer, it does not appear on the diagram anymore.

What can I do?

I am talking about this kind of property block:

Selection: