ORIGINAL: JeffK
I've played about 14 days of the BoB campaign since you posted and had a look at raids but have not seen your problem.
Are you playing an edited game??
Is it always the same units flying/refusing to fly??
Anything consistent about the target, lead unit, escort???
it's not edited, it's just with Alterego's patch
I've found the save when it happened for first time, this is the raid:
I have executed again that turn, and it happened again the same strange thing, but with one bomber unit plus to lead unit, but there's still no one flying of 189 fighters scheduled for escort task, and weather was good, 26% of cloud density, no one messages viewed about cancelled or delayed raid.
All other raids went well, their escort flew.
some images:
(Raid I'm refering to is that at left of images, that at right went right)
because of missing 189 escort fighters those 46 Ju 88 suffered heavy losses...
lead unit is different than second time event I writed into open post.
Also targets and escorts are different, at all, in first event it's a raid of luftflotte 3, in the second it's a raid of luftflotte 2
I've done other two more turns after second event, it has not happened again in these two turns (now it's 26 august)