Cylinder object physics problems

Hello,

I was working on simple demo game, and found this strange behaviour of cylinders (physics objects).

  1. When you walk with Player character on top of lying cylinder on the ground, by some magic it’s starts to rotate and you start to move with it. Video: Dropbox - File Deleted - Simplify your life

  2. Sometimes (maybe 30% of attempts) collision doesn’t work . Video:

I am using physics sub-stepping with 12 substeps.

Is it possible to do something about collision?

maybe try unchecking “player can stand on” under physics for the log