Roku stick not displaying subtitles

[craigg75]

I have an up to date Roku stick on my TV. However my show has embedded subtitles that won't display. I downloaded external subtitles but they won't show either. It's an mkv video. 

Interesting thing, I noticed someone said to change it to Force Transcode (Remux Disabled). I did that and the subtitles appeared but it overloads my Roku stick and I get playback stopping every 5-10 seconds. That's not a solution.

Another interesting thing. I have a Roku TV (TCL) where the subtitles are showing up just fine. 

So I'm officially confused and guessing there is a bug in the recent big update on the Roku app?

Craig

[SaltySci]

Also having this issue - embedded subtitles in mkv work with all other devices (iOS, Android) but not Roku Express 4k. Subtitles that are included as separate .srt files do work with Roku.

[theguymadmax]

It's an already documented bug: https://github.com/jellyfin/jellyfin-roku/issues/537