[BUG] Ships leaving gravwell.

i sent a good sized fleet to a another players planet( MP ) and he took two of his ships and pretty much had them run out of the gravwell into open space. he made it like 1/4 the nearest planet and to my horror about 30 of my ships broke off and followed them. idk i figure this is a bug BUT people are starting to use to split fleets in MP. its my fault for not micro better but i was fighting 2 other wars kinda hard lol. anyone seen this?