Plex used to always show the correct progress on my TV shows. Now I'm looking at the three shows I'm currently watching and all three have incorrect progress bars.
E.g. I've just finished watching episode 6 right to the end, but it's showing Episode 3 as up to about 20% in. Similar issues on the other two shows I've recently watched. It's confusing as it's making hard to remember where I'm actually up to on each show!