Regarding battle pass rewards

So i just reached battle pass tier 25 and unlocked the new decks the game offers. I received the mew v max deck first and everything was fine. However when i tried to receive the Palkia V star deck it didn't give all the cards it offered. For example i already had a Palkia V before obtaining the reward and after receiving the rewards it only gave 2 copies instead of 3. It didn't give the cards i already had nor did it convert them for credits. Has anyone experienced something similar. Is it a bug?