Steps I took:
Added a plane mesh and changed:
Subdivided 20 times
Added cloth simulation and pinned the edges, changed properties:
Quality Steps: 20
Collisions > Quality: 5
Added Rigid Body, changed properties:
Collisions > Shape: Mesh
Collisions > Source: Base / Deform
Added a cube mesh and changed:
- Added Rigid Body, changed properties:
Collisions > Shape: Box
- Added Collision
Result: The rigid body on the plane mesh seemed to ignore the cloth physics and just remained static.
Side note: The cloth physics are broken when rendering if not baked.
Someone asked for the file