output subtitles still out of sync

[Bazzu85]

Upload a tarball with debugging information

1. Run the command that produces the out-of-sync subtitle output, but with the additional --make-test-case flag, i.e.: subsync ref.mkv -i in.srt -o failed.srt --make-test-case
2. This results in a file of the form ref.mkv.$timestamp.tar.gz or similar.
3. Please upload this file using the "attach files" button at the bottom of the text prompt.

That's all! Thank you for contributing a test case; this helps me to continue improving the sync and to add additional integration tests once improvements have been made.

Additional context
Tried the subsync with bazarr. the sub remain out of sync and the first line is removed..why?
thx
Young Sheldon S04E10 720p HDTV x264 SYNCOPY.mkv.2021-03-18-08-29-56.tar.gz