This might be related to strike craft an AA frigates:
Strike crafts leave the gravity well when fighting at the edge or being pushed away by Halaycons (and so on).
The AA frigats chase the strike crafts and leave the gravity well. All ships that target the AA frigates follow the frigates - and might leave the gravity well as well (1$ for the "bad worldplay box"). The strike craft have to attack ships outside of the well, so after strafing they might have an even greater distance from the gravity well than before. AA frigates follow again, rinse, repeat.