Icon download can only generate 2 maximum icons in a .ttf file

[Laikaiyong]

Tried to download more than two customized icon here https://www.fluttericon.com/

However, the generation of .ttf files only allow two maximum regardless how many icons I selected.

.dart and .json is working fine

[fredroo]

@Laikaiyong send me a svg example file, I need generate x.com, kwai.com and threads.net