Prevent weapon attached to ragdoll from falling through floor?

Development World Creation
1

I have a simple game where a spear can impale a character and cause them to die with ragdoll physics. When the spear kills the character, it attaches itself to the skeletal mesh (with ‘weld simulated bodies’ checked) and then the mesh is set to go ragdoll.

So far everything works pretty well except the spear doesn’t seem to have any collision anymore and can fall through the floor. I’d expect/hope it to be taking into consideration when simulating the ragdoll physics.

Any ideas on how to make the spear also collide with the floor once attached to a ragdoll?

2

I should be more clear - the weapon is still attached to the character so it’s clipping through the floor but not falling all the way through. It’s just behaving as if only the ragdoll, and not the attached weapon, has collision enabled.