In prior versions, custom unicode characters ignored the bold tag because they were typically images, and, well, bolding an image doesn't make much sense. In the 1.16.2 rc1 update, unicode characters copy the `"bold":true` tag from previous text components and duplicate themselves to create a weird overlapping double image.
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is duplicated by 2
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Affects 1.20.1.
Attached example resourcepack which uses Unifont JP, a JP variant of GNU Unifont which is used in default Minecraft. I think there should be field to specify how much pixel the overlapping gryphs should be shifted, just as MC-76356 was resolved.
Additionally, this affects the offset of shadow and glowing text.
If possible, please attach a resource pack showing this issue.