[Bug] Font texture packs is not support.

[EnTIv]

should

but

        {
            "ascent": 7,
            "chars": [
                "ꐇ"
            ],
            "file": "ui/vip.png",
            "height": 7,
            "type": "bitmap"
        },

[BloCamLimb]

Bitmap fonts are not supported since it does not contain writing scripts and is not vectorized, so it mostly was applied to Latin based languages

[BloCamLimb]

If you want a "picture" inline a text, there's a developing API for it