Demonstrates infinite looping bug when an IllegalStateException is thrown in ParticleManager::loadTextureLists

 private void loadTextureLists(IResourceManager manager, ResourceLocation particleId, Map<ResourceLocation, List<ResourceLocation>> textures) {
  ResourceLocation resourcelocation = new ResourceLocation(particleId.getNamespace(), "particles/" + particleId.getPath() + ".json");

  try (
     IResource iresource = manager.getResource(resourcelocation);
     Reader reader = new InputStreamReader(iresource.getInputStream(), Charsets.UTF_8);
  ) {
     TexturesParticle texturesparticle = TexturesParticle.deserialize(JSONUtils.fromJson(reader));
     List<ResourceLocation> list = texturesparticle.getTextures();
     boolean flag = this.sprites.containsKey(particleId);
     if (list == null) {
        if (flag) {
           throw new IllegalStateException("Missing texture list for particle " + particleId);
        }
     } else {
        if (!flag) {
           throw new IllegalStateException("Redundant texture list for particle " + particleId);            <-------- here
        }

        textures.put(particleId, list.stream().map((p_228349_0_) -> {
           return new ResourceLocation(p_228349_0_.getNamespace(), "particle/" + p_228349_0_.getPath());
        }).collect(Collectors.toList()));
     }

  } catch (IOException ioexception) {
     throw new IllegalStateException("Failed to load description for particle " + particleId, ioexception);
  }

}

The error can be triggered by the code in StartupClientOnly::onParticleFactoryRegistration, by using the "wrong" ParticleManager::registerFactory() method