Hebrew Subtitles in the new BETA Xbox one Client

Hello to Staff of Plex Company,

There is a problem with the new Beta player on Xbox One.

I suppouse that the player uses Utf-8 encoding. But it decodes all the languages except from Hebrew.
Hebrew Utf-8 srt files are in Gibberish on the player.

Server Version#: 4.34.3
Player Version#: 5.1.1

Hello. It is the same also with Czech language. Subtitles are utf-8 encoded, and when switching back to old app they are displayed fine, but with new one, special characters are missing or are wrong.