Strange destructible physics

Hi,

I have a problem with a destructible mesh. As you can see in the image, the parts of the mesh have some strange physics after the “destruction” animation. It looks like their position is not based on the terrain collision mesh, but the perspective of the camera in relation to the terrain. If the player stands still, everything looks fine, but as soon as he moves arrount, the problem occurs. Is it possible to avoid this behaviour?

Here’s another example:

The destructible mesh was part of a blueprint which was moving along a spline. I was able to fix this by simply disabling the movement -.-