Why aren't rehearsal marks appearing over some percussion parts?

Hello everyone, I do not know why this is happening but I have rehearsal markings throughout my piece and some of them are not appear over the percussion section. Though I know that I have the checkmark selected for system objects to appear over percussion because some of them are correctly showing up above the percussion section. Does anyone know why only some are showing up over the percussion section and others are not? I am attaching screenshots of what I am talking about here.

Screenshot 2026-03-12 104853

As always, it is a bit of a guess without seeing the actual project file. But what I think is happening here is a combination of factors:

  • Pitched Percussion and Unpitched Percussion are considered separate instrument families by Dorico, each with a separate checkbox under Layout Options > Staves and Systems > System-attached Items.
  • By default, only instruments from the same family are bracketed together.
  • System-attached items will only appear above the first bracket for a given instrument family, i.e. no bracket → no rehearsal mark.

There are a few ways around this. First, a trivial one: this looks like a regular symphonic score, where the almost-universal standard is to have system objects in two places only: at the top and above the strings. A conductor will not be looking for them above the brass or percussion, and to put them there kind of looks like a misprint.
That said, you could add a manual bracket around the whole percussion section. Temporarily turn off both Condensing and Instrument Changes for the score layout, then in Engrave mode, on page 1 select something in the topmost and bottom-most percussion instrument and click the bracket in the left panel.
Alternatively, in Dorico 6 you can also choose Show system-attached items above: Specific Players and manually click six checkboxes each for Flute 1, Horn 1, Violin 1 and whatever’s the topmost percussion instrument.

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