Just to clarify I have had issues of flipping (as described above) and bouncing (similar to the dolphin dance I have read about in other threads) on the runway. This is actually a few feet above the runway so it is not true bouncing that my original comment described. I did not describe it well. Although many have suggested user error, I believe that is it a bug in the simulator. My guess is it has to do with the AP system not being disengaged on landing and taking over manual control a few feet above the runway. In all situations where I have forced manual control without properly shutting down the AP the aircraft has responded poorly. I was looking for confirmation that others were having similar issues.