Most of my DocumentTypes inherit a DocumentType GridComposition where I've added a grid layout with a single layout and multiple rowconfigurations.

My docType (example) Region suddenly has one rowcconfiguration missing when editing the content. Whilst docType Country (and all others) still has them.

It's the last item in the Rowconfiguration, I've tried adding a new row, but that didnt show either on docType Region. (It stopped at the missing one), but it did appear on the docType Country...

I've tried adding a extra layout, and then the missing rowconfiguration DOES appear, but only for that specific layout..

Also tried re-sorting the rowconfigurations and moved the missing on to the top.. Sadly the same result. It's as if something is faulty in the code (sponaneously, as we've put no new changes only recently)

I've tried rebuilding the models and clearing the cache.. But i'm kind of running out of other things to try.

Any suggestions?