Any file with this filename will not be added to the library

[gu5gus 0]

I just discovered that any file with a particular filename will not be added to the library (of a movie type library). The filename originally was "Ex Machina (2015) 1080p x265", and after experiments I found that "Ex Machina" and even "Ex" were not being added. Perhaps there is some string sanitation in the code that rejects "Ex"?

After scans, the file is also not present in the Metadata Manager. I have around 5000 movies in this library and this is the only file that has this problem. This file used to be in the library, but I'm not sure how long ago the problem started. I can say with certainty that 4.9.3.0 and 4.9.1.90 are affected. I think I was last aware of the file being present in the library around 2 years ago, unfortunately between then and now I don't have any further data. 

I'm happy to supply logs of a library scan or anything else if someone can please let me know how to get such a log.

Edited 1 hour ago by gu5gus
clarification

[Luke 42080]

Hi, what makes you think it’s not added to the library?

[gu5gus 0]

1. It's not showing as a top entry in the library when sorted by Date Added

2. It does not turn up in search results

3. It is not listed in the Metadata Manager

4. It is not alphabetically where it should be in the library when sorted by Title

Edited 1 hour ago by gu5gus
added 4

[GrimReaper 4742]

It was likely merged/multi-versioned with some other item in your library. What are your library enabled meta-downloaders and in what order? If you don't have many multi-version movies, you can filter for duplicates and find the one that doesn't belong/should not have multiple versions.