Program: 296
Project: 296
Buggy source:
/** 
 * @param usedOwnedEntity if it does not exist it is not an item usage.
 * @return true if an activation request got sent. Returns always true if usedItem exists.
 */
private boolean activateTargetOrOwnedEntity(EntityRef usedOwnedEntity){
  EntityRef character=getCharacterEntity();
  CharacterComponent characterComponent=character.getComponent(CharacterComponent.class);
  Vector3f direction=getViewDirection();
  Vector3f originPos=getViewPosition();
  boolean ownedEntityUsage=usedOwnedEntity.exists();
  int activationId=nextActivationId++;
  Physics physics=CoreRegistry.get(Physics.class);
  HitResult result=physics.rayTrace(originPos,direction,characterComponent.interactionRange,Sets.newHashSet(character),CharacterSystem.DEFAULTPHYSICSFILTER);
  boolean eventWithTarget=result.isHit();
  if (eventWithTarget) {
    EntityRef activatedObject=usedOwnedEntity.exists() ? usedOwnedEntity : result.getEntity();
    activatedObject.send(new ActivationPredicted(character,result.getEntity(),originPos,direction,result.getHitPoint(),result.getHitNormal(),activationId));
    character.send(new ActivationRequest(character,ownedEntityUsage,usedOwnedEntity,eventWithTarget,result.getEntity(),originPos,direction,result.getHitPoint(),result.getHitNormal(),activationId));
    return true;
  }
 else   if (ownedEntityUsage) {
    usedOwnedEntity.send(new ActivationPredicted(character,EntityRef.NULL,originPos,direction,originPos,new Vector3f(),activationId));
    character.send(new ActivationRequest(character,ownedEntityUsage,usedOwnedEntity,eventWithTarget,EntityRef.NULL,originPos,direction,originPos,new Vector3f(),activationId));
    return true;
  }
  return false;
}

Fixed version (ground truth):
/** 
 * @param usedOwnedEntity if it does not exist it is not an item usage.
 * @return true if an activation request got sent. Returns always true if usedItem exists.
 */
private boolean activateTargetOrOwnedEntity(EntityRef usedOwnedEntity){
  EntityRef character=getCharacterEntity();
  CharacterComponent characterComponent=character.getComponent(CharacterComponent.class);
  Vector3f direction=getViewDirection();
  Vector3f originPos=getViewPosition();
  if (RecordAndReplayStatus.getCurrentStatus() == RecordAndReplayStatus.RECORDING) {
    this.directionAndOriginPosRecorderList.getTargetOrOwnedEntityDirectionAndOriginPosRecorder().add(direction,originPos);
  }
 else   if (RecordAndReplayStatus.getCurrentStatus() == RecordAndReplayStatus.REPLAYING) {
    Vector3f[] data=this.directionAndOriginPosRecorderList.getTargetOrOwnedEntityDirectionAndOriginPosRecorder().poll();
    direction=data[0];
    originPos=data[1];
  }
  boolean ownedEntityUsage=usedOwnedEntity.exists();
  int activationId=nextActivationId++;
  Physics physics=CoreRegistry.get(Physics.class);
  HitResult result=physics.rayTrace(originPos,direction,characterComponent.interactionRange,Sets.newHashSet(character),CharacterSystem.DEFAULTPHYSICSFILTER);
  boolean eventWithTarget=result.isHit();
  if (eventWithTarget) {
    EntityRef activatedObject=usedOwnedEntity.exists() ? usedOwnedEntity : result.getEntity();
    activatedObject.send(new ActivationPredicted(character,result.getEntity(),originPos,direction,result.getHitPoint(),result.getHitNormal(),activationId));
    character.send(new ActivationRequest(character,ownedEntityUsage,usedOwnedEntity,eventWithTarget,result.getEntity(),originPos,direction,result.getHitPoint(),result.getHitNormal(),activationId));
    return true;
  }
 else   if (ownedEntityUsage) {
    usedOwnedEntity.send(new ActivationPredicted(character,EntityRef.NULL,originPos,direction,originPos,new Vector3f(),activationId));
    character.send(new ActivationRequest(character,ownedEntityUsage,usedOwnedEntity,eventWithTarget,EntityRef.NULL,originPos,direction,originPos,new Vector3f(),activationId));
    return true;
  }
  return false;
}