MediaCoder

I have an MKV file with an English subtitle stream (subtitles are not on a separate file, they are embedded within the MKV file). I tried converting it to an MKV file at a lower resolution to save space. The video and audio work okay, but the subtitle track is gone. I have tried each one of 'Default Render', 'VobSub Render' and 'Subtitle Stream' in Mode under Subtitles tab, with English as the 'Language', but the output doesn't show a subtitle stream. I have left all other settings at their default values.

How do I resolve this issue and get the subtitle stream from the MKV input file into the MKV output file? I am using MediaCoder 0.8.30.5652 on Windows 8. If there's any more information needed, please let me know.

I'm using v0.8.31.5645 and I can get it to work properly using the "Stream Copy" mode in the Subtitles tab... I'm not even sure what version you're using because the version I'm using still seems to be the most recent one yet you've somehow listed a higher build number (5652) while having a 0.8.30 version (we're up to 0.8.31 now).
In any case, I'd suggest grabbing the latest version here as I've confirmed that it does work with it.

same problem here.

i had same problem (yes in 2020 with lattest version !) with default settings for subtitles.
Fixed as Huggil said by changing, in the subtitle tab, the subtitle mode to "stream copy" + Force UTF8 encoding + set a language