Weird puzzle rating?

I did a lot of puzzles today and came across many which were not doable at my level and had a success rate of <10% and some even less than 1%.

Is there some kind of bug which doesn't update the rating of the puzzle correctly? Because the way things are now, I come across way to many of those in my rating range to make a (fair) serious attempt to raise my rating.

Most, if not all of those, are likely newer puzzles that haven't settled into a stable rating yet. My guess is the number of solves is under 1,000 and likely under 500.

Most of them, yes. A decent amount of them though gave thousands upon thousands of attempts and are still at those percentages.

I think there is a bug with updating the puzzle rating in combination with success rate, as I suspect is the way it works.

Some puzzles are multi-move and partially solving for one that give partial credit will drop the rating but the pass percentage also drops.