I’m on 7.4 and it works like a charm – but from what I remember it’s been fixed since back in May.
Nope.
There’s no “Folder view” in the first place… but you can switch to display your media “by folder”.
For a movie library… click on the “Movies” (next to the 93 in your screenshot) to switch between showing your library by movies vs. folders.
It’s the same for tv-show libraries where you can switch between displaying your library by show, season, episode or… folder.
Same for music library where you can switch between displaying your library by artist, album, track or… folder.
And the server is Version 1.15.3.876 (version 4.39.1. of the player I think)
You should update your server… that version has been released nearly 2 years ago.
If I remember the release notes of 7.4 correctly, this will also be the last version supporting that old server version.
Edit: I stand (slightly) corrected… from the 7.4 release announcement:
- This will be the last release to support Plex Media Server versions prior to 1.15.2.
Bingo! This worked. Plex is now usable again! Thanks 


