For me the first thing that comes to mind is Tales from Earthsea. I don’t think it’s excellent or anything and has plenty of problems but people act like it killed their dog. While it has its problems that have been covered extensively, I think it has a beautiful atmosphere and art.
IMO it would have been better received if it wasn’t advertised as an Earthsea adaptation and was just its own thing.
It’s unusual in that it requires a bit of extra work to really appreciate how absurdly rich and deep that one is. It’s honestly fascinating. And it looks like it was made 30 years ago, which is an absolutely monumental achievement considering it was made over 50 years ago.
Though I can of course completely understand it when people don’t want to have to read books and listen to Ted talks about a movie to figure it out.