Achievement Mob Kebab is in wrong place

When using the filter “New to old”, Mob Kebab should be the first, because it is the newest, but it is in the last place, in a strange section called “Others”

How to reproduce:

1- Go to the achievements tab

2- Use the filter “New to old”

3- Go to the last achievement

Expected result: Mob Kebab is the first achievement, in a section called 'Mounts of Mayhem, 2025

Actual result: It is the last, and in a section called Others!!!!!!!!!!!!!!!!!