On a multiplayer server my friend acquired the bad omen affect. While still in the village he drank milk but the raid bar kept filling up. He then opted to leave the server and I killed the rest of the pillagers. After that despite not killing any pillager captain the raid bar filled up again.

How to reproduce:

1. In a multiplayer game have you and another person in a world at the same time.
2. Find a village
3. Have your companion kill a pillager patrol as well as the leader.
4. WHILE the raid bar is still filling up have your companion drink milk (notice the raid bar will still continue to fill up which could be a potential bug)
5. after defeating the first raid the raid bar will continue to fill up resulting in another raid
6. during this raid have your companion leave the game and defeat the raid yourself, you will see the raid bar will fill up again (Main bug being reported) despite the person who killed any pillager leader already leave the game.