It was quite unfortunate that the two Bundesliga champion has the worst performance ever which is Borussia Dortmund and Bayern Munich, they both lose to a smaller teams they can easily win, actually I don't know if you observed something on today's match because almost all the big teams here and other leagues has a difficulty wining there matches today.
But however of all the matches they have played today, Bayern Munich match was actually what kept me thinking if Bayern Munich deliberately allow Frankfurt to win them or it was there inability to perform well that made them conceive that much.
I was very surprised by Munich's defeat. It was their first defeat in the League. They dominated the match with more than 65% possession of the ball. But Frankfurt was more because even though they only had 35% possession of the ball, they managed to score 5 goals from 6 shots on target. I don't understand why Munich lost that match.
For Dortmound vs Leipzig I think it's a pretty fair result. This means they played with a score of 2-3, which means there were attacks from both teams. In contrast to Munich who lost with a quite embarrassing score.
Bayern losing was definitely a huge shock, and it is not just a loss but they got humiliated as well, 5-1 against Frankfurt was definitely not something they expected and it was a terrible game by them without a doubt. However, Dortmund being carded and losing to Leipzig is not that much of a shock, first of all Leipzig is already a good team and could beat Dortmund at any given moment and that's normal, there is nothing wrong with that, but on top of that we also have Dortmund seeing a red card in the game, all of which resulted with them having even worse chance to win, so they ended up losing.
These are normal stuff, that game is not even remotely close to what it could be for the next close future, we are going to end up with a position where it will be a bit different and could result with Dortmund losing to Leipzig any given moment and yet Bayern would beat Frankfurt 9 out of 10 times, that's the difference between the two games that were played.