Bug with reducing rewards for rating at the end of the season?

Why does the rating chest for the season change its level in the direction of increasing the level and decreasing the reward? h ttps://i.imgur.com/DASnI25.png Today: h ttps://i.imgur.com/4wjZ0Fq.png
Something has changed patches or its bug?

Congratulations, you’re rank 17 in wild, and rank 19 in standard. The reward chest only checks your highest rank in either format at the end of the season, so changing between standard and wild will show a different result.