Essentially, if you try to bold the words in a resource pack description with something like "bold":"true", then the pack as a whole doesn't appear in the resource pack list in game, even though it would in prior versions.

After investigating, I found that this issue started in 1.20.3 (in terms of releases) and persists until now.

After I removed the parts bolding the letters, it showed up again.

Attached are pictures of the pack.mcmeta text and the resource pack lists.

This makes some older resource packs completely unusable without going into the pack.mcmeta file and changing it manually. Furthermore, it just removes the feature to bold words in the description of resource packs.