ya, same problem with me. but it was not there in earlier versions of mpc star like 5.4. you can see:
https://drive.google.com/open?id=19lx9l_EchDkOalG8W8X8JHf6HFgAmin6
name of movie: PoP.The.Sands.of.Time.2010.1080p.Hindi.English.MoviezFlix.in (3.79 GB)
and i am seeing its default subtitles
on windows 10
dell inspiron 15 3000