Just as a follow up, I've tried and was so far not able to get grey bars on the Lead Sheet (notation) display.
I can get them on the Chord sheet by using several methods, including the placement of a tag, but not on the lead sheet.


BIAB & RB2025 Win.(Audiophile), Sonar Platinum, Cakewalk by Bandlab, Izotope Prod.Bundle, Roland RD-1000, Synthogy Ivory, Kontakt, Focusrite 18i20, KetronSD2, NS40M Monitors, Pioneer Active Monitors, AKG K271 Studio H'phones