I've had couple of villagers disappear on me.
One might have been cured from a zombie and I am aware of this bug, but rest was bred.
The room is brightly lit to prevent any mob spawns and villagers are behind a wall so escape is also impossible.
Only thing that happened was a game crash but that was miles away from the village/breeder.
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[Mod] OcelotOnesie
migrated
Thank you for your report!
We're actually already tracking this issue at MCPE-21416, so I 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.
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