I hate people who merge the PR while the others are in the middle of the fucking code review

Merge their head with your keyboard. Or theirs.

How does your repo admin allow this?

Don't you have restrictions so as to allow the merging?

Usually this is a sign of not having a PR / review workflow.

Workflow consists of statuses, which should be visible.

Without a workflow, reviewing is really for nuts, since there is no coordination and things can go wrong bad TM.

It sounds like the PR settings on the repo weren't adequately configured or that your team didn't have a set code review workflow.
So unless the person who merged it has admin rights and abused that, then it's the fault of the repo owner / admin for not configuring PR merge conditions according to whatever was agreed within your team.

slap em, with yo pee pee, if you is a woman then slap em with yo chichis.

I tried to tag everyone but I couldn't. All teams have the settings done properly. It's the abuse of power the problem.

@AleCx04 my pee pee is not as big as my balls that as a matter of fact are also not big enough since they didn't solve the problem once I put them on the table :( tldr; my pee pee is tiny