The 'wing play' tactical style and 'lack of squad depth' unhappiness bugs haven't been fixed for me. This is a new save after i installed the new update!
I play vertical tiki taka and it shows my managers preferred tactical style as wing play. Bit of a problem when i let my assistant manager take training and he has my team training wing play. Same issue with a lot of the managers in the game, I've posted a few examples below.