I thought it was my fault, something with the controller, but it seems it is a bug. Yeah, after landing it is almost impossible for me to control the plane. I do not experience this with the cessnas, which are the other GA planes I fly.
Look at this video, everything is smooth until the wheels touch the ground, then I loose control (yeah, I have very strong winds, but yet, the approach was super stable):
edit: video was recorded pre-SU5, thus the fps at some points.