Now it did happen again. The Network Manager traces show the Access point has a short interruption,
and access point is removed from the Network List, only one other AP in the list, but the data is wrong:
ap_list_dump() does not show the same data than "iwlist wlan0 scanning".
=> therefore it seems to be a Network Manager bug, but much harder to reproduce than I initially assumed.
Now it did happen again. The Network Manager traces show the Access point has a short interruption,
and access point is removed from the Network List, only one other AP in the list, but the data is wrong:
ap_list_dump() does not show the same data than "iwlist wlan0 scanning".
=> therefore it seems to be a Network Manager bug, but much harder to reproduce than I initially assumed.