Marketplace skins with little to no geometry recently started being blocked by the skin filter.
Entire skin packs that had one or two skins blocked are now unable to be used, even ones that only uses the steve/alex body type.
In the Steven Universe skin pack and Greek Mythology, only some of the skins were blocked, but now all of them are.
Examples of skin pack with all skins blocked:
Builder & Biomes
Skin Pack 1
Some of these don’t even have custom geometry, while Villains, From The Shadows and Story Mode skins do, and are not blocked.
Latest version, tested only on android, but is probably the same on other platforms
Screenshots of the packs: