I had the same problem as you have, this is the only solution that worked:
Settings>Web>Player>Burn Subtitles (switched from the default, “Automatic” to “Always”)
Then refresh metadata.
Found this here: Subtitles not working - RESOLVED
I had the same problem as you have, this is the only solution that worked:
Settings>Web>Player>Burn Subtitles (switched from the default, “Automatic” to “Always”)
Then refresh metadata.
Found this here: Subtitles not working - RESOLVED