Never seen before - Bug-?

[mac5732]

This is early game, turn 24 in game, just started it, trying to teach my 23yr old son the game. Checked the avoid system button, its not on, hopefully I'll know more when I get sct on the other side and see if I can get thru from there or if anything looks different from that side. So far everything looks ok. It just happened as we were quiting for the night, System I'm in is empty of life with plenty of planets, I don't think there is Ai player there, I set game for low players to teach my kid the playing system, only have 5 AI opponents in game, large map, but you never know....

just some ideas mac