Bug Report Unable to properly use the Chinese fonts ttf format

[Kaiyuan]

I installed some ttf format fonts, but found OBS not display these fonts.
Attach font files.
https://mega.nz/#!kARwAApA!Ykec6QjLeVeQx_XaoPBziML4FIuod6pjThfyqh5AvKY

Version：0.15.4