But together with Georgian glyphs, Japanese glyphs still appear as squares. I use Hiragino Maru Gothic, an Apple computer font and a Japanese font.
I use Gravit Designer 3.2.63 on macOS Sierra 10.13.2.
See the screenshot:
The solution is that if one font doesn’t have Japanese glyphs, Gravit should fallback to another font which supports Arabic, Armenian, Chinese, Georgian, Greek, Hebrew, Japanese and Korean.