In my game (I play ITA - I use DD_SMEP btw) Germany after capturing all of Yugo territory (and I mean all not just VP) did not annex it. I waited for 2 months for them to do but the AI never did...
As to less problematic things - Germans DOWed SU in may 41, but the trouble was that they did not attack baltic states first, which would have been logical move and on the moment of DOWing about 50% of their forces were in the west of France. They started moving them the same day they started the war in the east... so why not before that?
Otherwise I must say German AI works very good, never seen them deal with before barbarossa wars so fast!
As to less problematic things - Germans DOWed SU in may 41, but the trouble was that they did not attack baltic states first, which would have been logical move and on the moment of DOWing about 50% of their forces were in the west of France. They started moving them the same day they started the war in the east... so why not before that?
Otherwise I must say German AI works very good, never seen them deal with before barbarossa wars so fast!