Simular thing happen to me twice in Lancs yesterday. Only difference is instead of flying strait and level, they were flying with their wings rolled right 45 degrees. (other than the 45 degree roll, they flew straigt and and const alt and heading till they went 'poof'
Very Odd....
I'll see if I can get a screen shot.
For some good news, Drones seem to form up fairly well for me on take off.
For some more bad news, Seems the damage transfer bug is still in effect when you bail from lead bomber to drone. (My Main bomber lost both wings and turned into lawn dart, bailed to drone and it turned into a wingless lawn dart, ditto for third drone...)