v5.6.6 can't adding subtitle?

when I upgrade to v5.6.6, but I can’t play sub Correctly!

Can you provide a bit more info about the issue you are seeing?

Are the subtitles not being displayed correctly, or are you having an issue downloading them from OpenSubtitles?

I set the sub file as same with main video(HEVC), and save to UTF-8.
But in Apple TV, that doesn’t see the sub in.
as attachments