So glyphs work in other fonts, but not in your "Devious" font, right?
What kind of font is it (OpenType, TrueType, PostScript)? What computer platform? Does the font still work in other applications?
It's an OpenType font and works in Illustrator. I ended up typing the titles in Illustrator and importing.
iMac OS X El Capitan
Does this problem only happen in one file or in any file?
If in all files, try restoring your preferences:
If only your current document, it could be corruption. Try saving as IDML and reopen.
So weird, I tried it in another ID document and it worked...! Thanks for your help.