We recently changed Number and Numeral chart chord styling to superscript the chord suffixes. The charts looked much better and were easier to read, but by superscripting the suffixes, it also increased the line height. As a result, chord charts and number charts no longer had the same amount of lines on a page. This made it impossible to line up page breaks and column breaks.
We've just pushed out an update that changes the styles yet again. It is still easy to differentiate the chord from its suffix, but they aren't shifted quite as far up, allowing us to keep the line height the same and ensuring that chords charts and number charts have the same number of lines on their pages.