Given a modular block that accepts multiple Models, creating a new entry claims the model does not have fields.
Add some fields! This model currently has no fields: to start creating some records of this type, please head over to the Admin Area > Models section and add some!
The models are valid, as there are are already entries. Picking an existing one or going the other way around by creating an entry and then adding it to the modular block works without problems.
This does not happen with all models allowed in the modular block.
Thanks for looking into this!