The hologram artwork for the Blue-Eyes White Dragon is not the same from the card that was played.
Bug reproduction steps
Step 1 - Activated The Melody of Awakening Dragon discarding Dragon’s Mirror’s and grabbing Blue-Eyes Chaos MAX Dragon and Blue-Eyes White Dragon;
Step 2 - Activated Chaos Form sacrificing Blue-Eyes White Dragon from the hand to summon Chaos MAX Dragon;
Step 3 - Activated Return of the Dragon Lords to summon Blue-Eyes White Dragon from the graveyard to the field.
Screenshot OR error code