[1.58][BM 1.10] Mines out past the system

When a neutral empire attacked my mines on the warpoint I had laid on their warpoint back to my system, some of their wing of 21 fighters died, but out of 47 mines, only 5 survived and appeared out in the black space approximately at a 90 degree angle from where they were laid, and appeared about 7 sectors out into la la land outside of the system grid. It was corrected when I refreshed the system view (by switching to a report).