Bayern Munich is not going to have any problems winning the Bundesliga title at all. They don't have any competitors who will be able to give them a decent fight.
But in the Champions League, they have a lot of competition and there are teams that are better than Bayern Munich in a lot of aspects. So they will obviously find it hard to win the Champions League.
I think the case of Bayern Munich has become like PSG. Bayern Munich also does not face hard competition in the league and that does not prepare them well enough going into the Champions League.
Many people are already agreeing on that. Bayern Munich would have another comfortable season in the Bundesliga. However when it comes to the Champions League, they have a really tough job to do as always. Their dominance can be halted by some specific teams for now. We saw that with even Villarreal for example. They still need to improve their game in this tournament to be able to make it to the final and title as well. They need to make some changes seemingly.