Went into a Snowy Village (several) and tried giving myself Bad Omen effect.
What I expected to happen was...:
I expected a Raid to begin.
What actually happened was...:
The Raid Boss Bar started filling up. When it reached the end, the Boss Bar went away and the Raid did not begin.
Steps to Reproduce:
1. Go into a Snowy Village
2. Give yourself Bad Omen Effect
I'm dumb. I searched before posting this and didn't find this other report until now: https://bugs.mojang.com/browse/MC-140594