Atlantic Diversion - sub hunt end trigger not working

[Andy2012]

Last mission, ending trigger seems broken or badly designed.
I knocked out the whole allied fleet easily, 15 turns. But their 4 subs loitered around (invisible to me) so the fleet was not fully destroyed.
(Their planes fled, though.)
So, instead of plowing through the map with sonar for 15 turns, I just cheated a win and ended a subpar DLC with a wimper. Yeah.

[TripleCP]

Weird. I've completed this one twice but don't remember sinking any subs (certainly not four).

[Andy2012]

Weird. I've completed this one twice but don't remember sinking any subs (certainly not four).

I assumed there were subs. I tore through the allied fleet with my Hippers (overpowered...), reached their deployment area, all their planes fled, sunk their carriers and BBs, but there were still 4 units in the counter. I guessed they were subs.
Well, doesnt change a thing. Weak DLC, period. I was already pretty suspicious after Winter War about any fresh releases, but this has just doubled it (okay, I liked Blitzkrieg). Probably going to skip the next ones, especially if they do odd fringe scenarios and theaters. It is just not worth my money.

[Horst]

Andy, I can't shake the feeling from reading your reports that you would gladly put tank-tracks below your Hippers and use them also for ground combat as landships during Erik's campaigns later.

[Andy2012]

Andy, I can't shake the feeling from reading your reports that you would gladly put tank-tracks below your Hippers and use them also for ground combat as landships during Erik's campaigns later.

Yeah, a totally overpowered fleet of Landkreuzers plowing through the Russian plains. Barbarossa would be over in two weeks.

https://en.wikipedia.org/wiki/Landkreuzer_P._1000_Ratte