I think this is a trademark of Flick ball. Abysmal defending is his calling card, the flaw everyone knows. I checked out the Bayern forums. Most got used to it, they said Bayern could concede 2-3 goals to the worst sides of Bundesliga at any point. It's the same with us. Most frustrating entertaining ball possible is how Bayern fans put it, and it fits Flick to a T.
At this point, it's useless to demand Flick to change his ways. We can only hope the offense is so well drilled as to carry the defense, or call it a day and move past Flick.
This is what I've been saying, check is goals conceded with Bayern with a back four tailor made for his type of football, the type of defenders everyone here says we need to be better defense, it didn't help him at Bayern, it would help him now.
They key was the keeper and we have one now in Garcia, he and the club correctly identified what is the most important key in our back line, a great shot stopper.
The man will conceded goals no matter who he has in defense, a natural by product of his tactics, which is fine as long as he knows he can adapt to close out games