So i had the Bad Omen effect (because i made my base in a pillager outpost) and found a zombie villager, so i cured it, but the raid health bar was immediately filled when the raid was triggered, and the first wave of illagers never spawned in.
Steps to Reproduce:
1. Kill an illager captain or do /effect @p bad_omen (This can be done after step 2 as long as it is done before the villager is cured)
2. Trap and start curing a zombie villager
3. Wait for the villager to be cured
4. Trigger the raid
(Note: Someone else already reported something similar as a 1.14.4 bug, where the raid started when the villager was cured, and it was marked as "Works as intended". The issue that i'm having is that the first wave never spawns.)
Could you please provide more details? Could you provide some screenshots of your surroundings?