RockComet by-products cross bunker doors

Another strange about the rock comet.

The sum of mass of all the debris and created block seems always bigger than the mass of the comet.

Came here to report a bug that I believe might be connected to this.

If I build mesh tiles directly under my bunker doors, they take "meteor damage" when a rock comet makes a direct impact on the bunker door above them.

Steps to reproduce:

1. Build a horizontal bunker door in the space biome
2. build mesh tiles in the cells directly under the bunker door
3. Observe the mesh tiles take "meteor damage" when a rock comet makes a direct impact with the closed bunker door above it.