Navball turn does change direction : in-depth bug test

[Kerbinator-Fras]

KSP_x64.2021-11-04.22-16-13-193.mp4

You can see, after every 2 toggles, the direction of ship just changed (shouldn't change every tilt-on-off cycle)

KSP_x64.2021-11-04.22-19-43-718.mp4

however not seems to be harmful in space.

By the way, a few days ago when I submitted issue #13 , I found that even not introduced invertRotAltitudeThreshold on Saturn, it works properly (after atmospheric deceleration V_surface 0 horizontal; instead in a test before, using jupiter, deceleration make V_orbit 0 horizontal) . Not knowing how it works, actually.