[Zubersoft]

It's most likely a bug. There is a version 3.8.3 being released shortly that will address remaining bugs with text and chord pro files. I'll test your file out with 3.8.3 just to verify it all works as expected with the fixes. I apologize for the inconvenience in the meantime. The pango markup did require massive changes to all of the code used for text and chord pro files.

Mike

UPDATE:

The file seems fine using version 3.8.3 on my iPad Pro.