OSD - Wrong distance to home

Hi,

I use a Micro Minim OSD and I display the distance to home pos on the screen. When home pos is set in the controller, the OSD gives a value to this distance. But sometimes (1 flight over 10), this distance initializes to incredible values (more than 10km), even in the negative.

Does someone have already seen a behavior like this ? The strange thing is that 9 times over 10, when the event doesn’t occur, well the distance displayed behaves correctly.

I use Copter v3.5.4, a Micro Minim OSD and a UBLOX + Compas from mRobotics

Thanks