Regression: Jazz style chord symbols don't work

a9ce98a, Windows 7

• New score e.g. from treble clef template
• Add some chord symbols (set to and shown in standard style)
• Switch to jazz stile

expected result: chord symbols show in jazz style, font and rendering

actual result: no change, still show in standard style, font and rendering

Even changing text style of chord symbole to MuseJazz doesn't result in the jazz style rendering (superscript/subscript), it only changes the font.

Starting with a Jazz template works as expected though