Possibly a metadata issue. The movie title/name is possibly set to “The.Two.Jakes.1990.1080p.WEBRip.x264.”
Load the file into Subler, https://subler.org/. Subler is a nice tool for muxing tracks in/out of MP4s. It also has the ability to manually edit and download metadata for movies & tv shows. Mac only. MP4/M4v only. When you’ve finished with the edits, be sure to Optimize the file. This re-arranges some bits for better streaming. See the FAQ for details.
You might need to Plex Dance the file after making the changes.
Also:
A) Check the scanning agent on the movie library. Edit the library, choose Advanced. Set agent to Plex Movie.
B) Check the order of your movie agents in Settings -> Agents -> Movies -> Plex Movie and -> The Movie Database. Move ‘Local Media Assets (Movies)’ below ‘Plex Movie.’ Edit ‘Plex Movie’ agent to reflect desired choices for ratings, etc. Cast List Source must be set to The Movie Database to download actor pics.
C) Refresh All Metadata for the library to have the changes take affect.
The above three items have Plex check online databases before using the metadata in the file.
In there, grab the line ‘Local Media Assets’ with your mouse and drag it downwards, so it ends up being at the bottom of the stack of active agents.
Repeat the same under
Settings - Server - Agents - Shows - TheMovieDatabase
Settings - Server - Agents - Movies - Plex Movie
Settings - Server - Agents - Movies - TheMovieDatabase