Duplicate filenames in iOS VLC App

I've stared at this problem for hours trying to figure out a pattern on why the duplication is occurring. I think I've figured it out, but it make no sense to me. Here's my observation...

In the IOS VLC app I only see duplicate filenames when the filename of the video contains certain Cyrillic characters. Specifically the Й / й and/or the Ё / ё Cyrillic characters.

For example, a filename of "Ратмир и Серж - Девчёнка.mp4" will produce duplicates because of the ё in the filename. Likewise a filename of "Сергей Лазарев 7 цифр.mp4" produces a duplicate as well because of the й in the filename.

If I rename the filenames - omitting the ё or й Cyrillic characters, and resynchronize using iTunes, the duplicates disappear.

I read a couple of threads in the iOS VLC App forum where a handful of people had similar issues, and it looks like the commonality between the titles reported in the thread seems to be a semicolon or a question mark being used in the title. Something is going on with special characters tripping up the VLC app whether it's the English semicolon / question mark or the Cyrillic Ё / Й.

Operating Environment

-iPhone 7 Plus 128 GB

-IOS 11.0.1

-VLC 2.8.3 (283.2)

-iTunes 12.7.0.166

-Video file formats - .mp4 only

That's my two cents worth.

ZeroDark30