Server Version 1.26.0.5715
Player Version 4.76.1
This isnt just happening in Plex Web. It is happening in all of the clients I have tried.
I have 2 different movies. They happen to have the same name and release year. If I search for that movie, the new search results dropdown thing only shows 1 result and 1 thumbnail. Clicking on that takes you to a selection with no thumbnails and multiple options. Basically you just have to guess which movie is the one you want.