Using "/tellraw" or any other method to show a unicode character like "\uF808" causes a crash with a custom font.

If you use "/tellraw" or any other method to show a unicode character like "\uF808", it causes a crash if there is a custom font. The crash log can be found below, and the resource pack in question can be found here: https://github.com/ImCoolYeah105/Mechanization/releases.