Font Book not displaying symbol fonts
Mac Pro came November 2016 with Sierra installed. Mac Pro is unable to display any symbol fonts' character glyph in Font Book app and Emoji & Symbols app, where display of all symbol fonts show same boxed question mark symbol replacing all symbol font character glyphs.
Emoji & Symbols app is only effected after install of Microsoft Word, indicating that a 3rd party app can worsen the system corruption displayed in Font Book. Font Book corruption is present from the moment the macOS is turned on, when run for first time after unpacking Mac Pro purchased from Apple Store.
Mac Pro, macOS Sierra (10.12.1), MacBook Pro - iPhone6+ - Power PC