Villager with a job took another job from a villager

I’m having problems with the villaher trading right now. I was just playing on our server, suddenly the villager with a job took another job (which is the same) from a villager. So that means the villager has two jobs, both are the same, but the villager that had their job stolen still has the skin despite being unable to trade. Its not a visual bug, because even if their trades are already locked (have traded already) they still lose the trading. Even if I placed another job block, a villager with the same job will still take it even if they already have one. I lost like 3 villagers with food trades so please do fix this 😁