Program: 1053
Project: 1053
Buggy source:
/** 
 * Deserializes a prefab, with a known uri. This uri will override any uri within the serialized prefab
 * @param prefabData
 * @return The deserialized prefab
 */
public PrefabData deserialize(EntityData.Prefab prefabData){
  PrefabData result=new PrefabData();
  result.setPersisted((prefabData.hasPersisted()) ? prefabData.getPersisted() : true);
  result.setAlwaysRelevant(prefabData.hasAlwaysRelevant() ? prefabData.getAlwaysRelevant() : false);
  if (prefabData.hasParentName()) {
    AssetUri parentUri=new AssetUri(AssetType.PREFAB,prefabData.getParentName());
    if (parentUri.isValid()) {
      result.setParent(Assets.get(parentUri,Prefab.class));
    }
  }
  if (result.getParent() != null) {
    for (    Component comp : result.getParent().iterateComponents()) {
      result.addComponent(componentLibrary.copy(comp));
    }
  }
  for (  String removedComponent : prefabData.getRemovedComponentList()) {
    ComponentMetadata<?> metadata=componentLibrary.getMetadata(removedComponent);
    if (metadata != null) {
      result.removeComponent(metadata.getType());
    }
  }
  for (  EntityData.Component componentData : prefabData.getComponentList()) {
    ComponentMetadata<?> metadata=componentLibrary.getMetadata(componentData.getType());
    if (metadata != null) {
      Component existing=result.getComponent(metadata.getType());
      if (existing != null) {
        componentSerializer.deserializeOnto(existing,componentData);
      }
 else {
        Component newComponent=componentSerializer.deserialize(componentData);
        if (newComponent != null) {
          result.addComponent(newComponent);
        }
      }
    }
  }
  return result;
}

Fixed version (ground truth):
/** 
 * Deserializes a prefab, with a known uri. This uri will override any uri within the serialized prefab
 * @param prefabData
 * @return The deserialized prefab
 */
public PrefabData deserialize(EntityData.Prefab prefabData){
  PrefabData result=new PrefabData();
  result.setPersisted((prefabData.hasPersisted()) ? prefabData.getPersisted() : true);
  result.setAlwaysRelevant(prefabData.hasAlwaysRelevant() ? prefabData.getAlwaysRelevant() : false);
  if (prefabData.hasParentName()) {
    AssetUri parentUri=new AssetUri(AssetType.PREFAB,prefabData.getParentName());
    if (parentUri.isValid()) {
      result.setParent(Assets.get(parentUri,Prefab.class));
    }
 else {
      logger.error("String_Node_Str",parentUri);
    }
  }
  if (result.getParent() != null) {
    for (    Component comp : result.getParent().iterateComponents()) {
      result.addComponent(componentLibrary.copy(comp));
    }
  }
  for (  String removedComponent : prefabData.getRemovedComponentList()) {
    ComponentMetadata<?> metadata=componentLibrary.getMetadata(removedComponent);
    if (metadata != null) {
      result.removeComponent(metadata.getType());
    }
  }
  for (  EntityData.Component componentData : prefabData.getComponentList()) {
    ComponentMetadata<?> metadata=componentLibrary.getMetadata(componentData.getType());
    if (metadata != null) {
      Component existing=result.getComponent(metadata.getType());
      if (existing != null) {
        componentSerializer.deserializeOnto(existing,componentData);
      }
 else {
        Component newComponent=componentSerializer.deserialize(componentData);
        if (newComponent != null) {
          result.addComponent(newComponent);
        }
      }
    }
  }
  return result;
}