Johan can correct me if I'm wrong, but according to the Chord Pro specification (https://www.chordpro.org/chordpro/direct...nv_chorus/), you must use {chorus} because that is the directive. The label that is used with the chorus directive does not change the way that directive works for repeating it. Having said that, you are correct that it is a bug that MobileSheets is not assigning the same label to the repeated chorus sections. In your case, it should be showing "Refrain", so I will fix the code if it's not working that way at the moment. I also should be supporting {chorus: Refrain}, so I will fix that as well.
Thanks,
Mike
UPDATE:
Both fixes have been made and will be included with the next update.
Thanks,
Mike
UPDATE:
Both fixes have been made and will be included with the next update.