Bug in the system I'll fix it before accepting more merges like this

Can someone tell me what's the meaning of this? As of this writing there's: #651516 | 芙莉莲、菲伦tk | 148 uploaded 1 day 5 hours ago #651756 | Saimin Shihai sareta Mahoutsukai ~Zenin… | 1,951 uploaded 3 hours 40 minutes ago The tags were already merged six days ago and we now have a wise guy making another fragment of the same franchise. Like, what's the point of merging tags if there's a fragment that's going to be made again afterwards? smh. EDIT: Same thing has happened to the AoT tag: #651561 | Historia BBC Fella | Historia BBC Fuck | 2,095