Rehearsal Marks empty in last flow of a project

I have a project where the rehearsal marks are not showing in the last movement (empty squares in the parts). They are ok in the rest of the project and in the score.

Any ideas what is causing this and how I can fix it?

So I had changed the global setting to “bar numbers.” When I changed back to letters, everything is fine and I filtered all of them and changed to bar numbers.

Looks like a bug to me - but for now I’ve resolved it.

If you have any independent time signatures, they don’t always play nicely with rehearsal marks set to show bar numbers.

Oh ok - yes I do have those too. Thank you!