pillager captain no longer spawn on pillager outpost!
Related issues
Comments

It still does. Not every pack spawns a caption instead it spawns caption by chance - between every few spawns at night.
Thank you for your report!
We're actually already tracking this issue at MCPE-43396, so we will resolve and link this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature, to see if the issue has already been mentioned.
Suggested search terms for JIRA desktop view: {color:#009900}mcpe unresolved pillager* outpost* spawn*{color}
Quick Links:
📓 Issue Guidelines – 💬 Mojang Support – 📧 Suggestions – 📖 Minecraft Wiki
They always spawn, but they currently don't respawn.