Hi ,
see attached link describing the same issue I’m talking about …
My server installed on AMD PC (windows 10) and my clients are Nvidia shield & Amazon 4K max on both of them the heb subtitles does not support RTL
I use Kodi till the day I meet PLEX 
but this issue is annoying & I’ll be happy to solve it …
https://forums.plex.tv/t/hebrew-subtitles-punctuation-problem-in-apple-tv/217571
Thank you !
Shimi
