Linking groups with Rigid body Constraints to soft body not working

I’ve got a simple subdivided plane set as a Soft Body so simulate a cloth i BGE. I’ve pinned it to two empties in each top corner via Rigid Body Joints. This setup works as expected. However, if I put these three objects into a Group and instance that Group to a different layer the joints do not work and the cloth simply falls. Is this a bug or do I need another setup for this to work?

As far as I know rigid body joint constraints are not supported on group instantiating.

You have to define the constraint in Python and run a setup function, then you get the expected result. So contraints are maybe not part of the group then?

I’ll mark this as solved.