Look at this video from today:
from 04:20 had bad video, enganged RTL and it was working well and was flying at direction 196.
at 05:42 quad was flying sideways (as if nose turned right) but still flying home at direction 194.
i didnt like the sideways flight, so went back to ALTH, and the arrow was now sowing home to my front left, when it was to my back.
from 6:05 im flying towards home (and the distance to home is decreasing) but the arrow pointing to home is to the BACK ?
at this point im flying SOUTH and the heading shows 030-040 degress like im flying NORTH ?
it only seems to go back to correct arrow reading at 06:42.
This was one of the weird instances i had today, and this was with 8 sattelites.
Also check out this video:
look what happens when i hit LOITER at 05:30 (twice).