OH3: Popp z-wave doorlock

Running OH 3.1.0M4 right now (migrated from 2.5) and wanted to finally include my Popp doorlock finally “for real”. I included it a while ago but never really did anything with it.
Now I noticed that I cannot open the Thing anymore in the MainUI settings.
This is all the page shows:

It basically works correctly but this doesn’t look right.

Any idea what might be wrong?