I have some troubles with the update for new files videos or str files, but if I use a rebuild option in the dashboard the mkv shows the subtitles properly even with 3D files, you need to sure that the file name of srt is the same of mkv.
I have some troubles with the update for new files videos or str files, but if I use a rebuild option in the dashboard the mkv shows the subtitles properly even with 3D files, you need to sure that the file name of srt is the same of mkv.