The collider tag has been added to the objects but in only works in the new project.
Any errors or warnings in the log? Make sure that mesh distance field generation is enabled for the project you are working out of.
Distance fields are enabled and there are no errors in the log, I just get the follow message when I add the collider tag, it also appears in the new project where the collision works.
LogRigidMeshCollision: Warning: Convex collision objects encountered and will be interpreted as a bounding box on Table
Its the same map just in a different project? Is it the same engine assets for the chair in both projects, or is it a copy? If it is a copy of some kind, are physics bodies setup on the one not working? It seems like it is, but worth checking it looks correct in both. If you turn off “Use Mesh Distance Fields” on the summary view for the one that doesn’t work, do you get collisions against the bounding box? Double check that the settings for Collider_StaticMesh is the same for both emitters.