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.
Even in the MST3k episode, it was an ordeal.
It is truly amazing how they managed to make an hour-and-ten-minutes feel like three hours. I (barely) finished watching it, and couldn’t believe how little time had actually passed.