Well except of this issue I`ve noted unrealistic ability to fly on "blade" , ( ie tip of wing looks to ground at 90 * ), moreover with the Instructor in 2d cockpit! I`ve got quite a lot practice as aerobatic pilot ( Yak 52 engine 420 hp)but never saw such tricks with 2 persons onboard.... Also should tell I could not find how to "show stick" in cockpit? Another strange thing- lock of brakes! This button shows unpredictable results when you need to warm up engine- sometime holding aircraft on place, sometime you start suddenly speeding up! Also looks strange so called "flat spin (not inverted). Aircraft goes out from this one by itself when you keep stick and rudder in neutral position. Its absolutely out of reality!