[Bug]: Unrecognized subtitle tracks in some MKV video files

[Jedir1]

Problem description

Hello:
Unrecognized subtitle tracks in MKV files.
When playing MKV files with both H.264 and H.265 video encoding and AC3, DTS, MP3 sound encoding regardless of the bitrate used, the Nova Video Player does not recognize the subtitles included in the Matroska container.
This bug doesn't always happen, it only happens in certain video files, I don't understand the reason.
Tests carried out on my T.V Box Xiaomi Mi Box S with Android 9 with all its updates installed like that of a friend.
This bug doesn't always happen, it only occurs in certain video files, I don't understand the reason.
Thank you very much for this fantastic player.
I sincerely congratulate you for your work.
Sorry for my English, I'm Spanish.
All the best.
Marcos.

Steps to reproduce the issue

Play video files in MKV format with subtitle tracks.

Expected behavior

That the player recognizes all subtitle tracks.

Your phone/tablet/androidTV model

Xiaomi Mi Box S

Operating system version

Android 9

Application version and app store

No response

Additional system information

Android 9 with all sistem updates installed.

Debug logs

No response