I've defined a text variable that I use for a running header. This variable is defined from the first use of a "chapter title" paragraph style that I've also defined. I've inserted this variable on my A-master page, which is synced between documents in my book. The problem I'm running into is that I've used a number of glyphs in the text comprising the first use of that style, and the text variable (my running header) looks garbled: it's missing letters and has mixed caps. If it matters, the font I'm using is Orpheus Pro Bold.

Attached are two screenshots: the first page where the header is defined (as chapter title), and subsequent pages where you'll see the garbled header at the top right.