I have a movie section, and a few movies use the following structure:
MovieName/1. Movie/MovieName.mkv MovieName/2. Sample/MovieName[SAMPLE].mkv
Previously the sample files were ignored. However today I noticed PMS 0.9.9.14 scanned added them to my library.
According to this page (https://support.plex.tv/hc/en-us/articles/201381883-Special-Keyword-File-Folder-Exclusion) any file < 300MB with the word "sample" in the name should be ignored.
As a workaround I put a .plexignore file in my main movie root and added `*/1. Sample/` to it.