Despite PSG being on the losing side whenever they've faced Bayern in recent times, I strongly believe this time around, it'll be completely different [their overall form has significantly improved compared to the start of the season and so far, they've only conceded a single goal in the competition while having the highest avg possession & most completed passes].
- I'm predicting a 2-0 win for PSG.
I'm also thinking the same as you on this match. PSG don't have a great history against Bayern Munich. But this tournament has been fully open to different results so far.
Just as Juventus-Manchester City example.

Juventus were countering them in their earlier matchups. But here Guardiola's team destroyed them.
But I don't expect a big score in this one. I think of a PSG win by a one-goal difference.