[itsme]

The reference implementation always uses the given page width, divides it into the pieces that are required for the specified number of measures plus the left and right margins. No matter how big the chord font is, the width of the measures stays the same and all measures and chords are visible.
In MobileSheets the width of the measures depends on the font size. So grid lines are created that might be too wide to fit on the page.
That's what I call incompatible.
If the chord font is too big, measures and chords are cut off at the right edge.
Or I have to reduce the chord size to make the line fit on the page. This might result in unreadably small chords.
That's what I call unusable.
Sorry to say that.

I have dozens of ChordPro files that me and my bandmates used to create PDFs with the ChordPro reference implementation. They contain many examples of chord grids and ABC snippets.
I will look up some relevant ones and provide them for testing in separate threads, one thread per song.

First example: https://zubersoft.com/mobilesheets/forum...12151.html
Another one: https://zubersoft.com/mobilesheets/forum...12152.html