Never seen that before. I suggest you dump your shared font, and if it's still not working, it might be a bug in Citra. These are the guidelines for making an issue:
Report the issue on GitHub after verifying nobody else posted it already.
We usually call our issues: "Game title - Observed problem"
Do not tag your issue name, it will be done for you (We'll add "A-Audio" tags etc as we see fit, so do not include tags like "[Audio]" in the title)
When submitting the issue, make sure these links will still be reachable in 1-2 years.
Some issues are hard to track down. And even if they are fixed it's good to have documentation reaching back a couple of months.
Please make sure to mention the latest commit hash/id of the nightly/master build you were using (which should be in the window title).