Dont take a smoke break!

[Herbs107]

Was doing a single player quick mission last night it was the low level intercept of JU87's with a squadron of Hurries. All went well, bounced the Ju87's, got two kills and hit auto pilot to rtb. Well i decided to go have a smoke break, when i got back to my pc my Hurrie was missing one of its propeller blades and wasnt flying very well. I have no idea what happened, also all my squadron mates had gone? I took it off auto pilot and headed inland to make a forced landing. Has anyone had this happen to them, only possible thing i can think of is we had a midair.