Pendulum Monster cards with rarities applied do not apply the animated effect properly, it appears warped and “stretched out”. This is likely due to the Pendulum cards having artwork that exists within the Pendulum effect box. This applies to all card rarities available.
Bug reproduction steps
Apply any card rarity to a Pendulum monster Card in the Deck Editor.
Screenshot OR error code
The holographic effect should appear similar to non-Pendulum cards with the same card rarity applied.
What OS are you using