When I use “write>create system text>rehearsal mark”, bar numbers will not be hidden; it has to be done manually.
“Write>create rehearsal mark” works as expected.
In that case it’s still just system text, not a rehearsal mark. Notice there’s no border, and it doesn’t follow the sequence. That submenu is just a way to create system text in a particular paragraph style, the same as Shift+Alt+X and changing the style in the little editor window.
You’re just creating System Text, using the same Paragraph Style that is set for Rehearsal Marks.
These system texts are useful; verse, bridge, voc. enter, winds exit or any other non-sequential marking that makes the bar number unnecessary.
Yes, I agree, and Dorico does not really support these ‘section identifiers’ very well at the moment.