Example Armadillo dropping with "sharp" edge

[blower05]

Hi Prof Bender,

I tried to modify the rigid body to fall on into a relatively 'sharp edge' actually it is not sharp at all and actually It is just a plank. The armadillo soft body can poke through the plank during the simulation. I tried subdivided the plank for more meshes but it is still the same. I tried 105 substeps and collision tolerance with different very small and large values, it still failed the collision. What should I do to correct this?
BTW, I tried a cube of wider width and the collision is OK and looks normal.

Thanks

[janbender]

The simulator checks all the box SDF for all aramdillo vertices and vice versa if the setting is correct in the scene file. Can you post the scene?