I’ve noticed this problem while building, when trying to place Meshparts on Parts
If the Collision Fidelity is set to Default/Hull the Meshpart will sit 0.05 studs off the surface of the part
and will be slightly offset, however this problem is fixed and soon as the Collision Fidelity is set to box.!
Here is a photo to better explain this bug.
Here is the place file re-creating the bug.
Collision.rbxl (17.6 KB)