Multiple non-stackable badges as a merged user

[twofoursixeight]

Reproduction:

1. User B gets created.
2. User B goes for badges
3. User B gets merged into user A.
4. In their badges page, multiple non-stacked badges are stacked twice
   The badges get automatically removed right after the next badge query starts

Result:

[Canapin (Coin-coin le Canapin)]

There’s an occurrence of duplicate badges not clearing up in this duplicate topic:

Badge Glitch

I made an account on that forum on 08-26-2023 then it got merged a few days later. However, the forum is not removing the duplicate badge. Unlike the other duplicate badges, “First Emoji” happens to presist. This exact user has the same bug on the same forum as well:

I’ll move this topic to Bug.