My default font is Futura Medium. The font displays just fine in all of my other programs and in system dialogues and menus. Recently, however, LibreOffice has been having an error. All of the menus from the panel are displaying Futura Medium just fine, but right-click menus, the File Open dialogue and all mouseover text is just displaying Unicode boxes. The problem persists after reboots.
Here's a screenshot of what I'm talking about
I've used Unity Tweak Tool to change my default font, and for all others that I've tried, the problem is fixed. Any idea why Futura (And all of the variants of it that I've tried) are not displaying properly?
Ubuntu 17.10. LibreOffice 22.214.171.124.