Dagobert Duck
Comments
¿Estás seguro de que no es OptiFine?
(Traductor de Google)
(Google Übersetzer)
Well, if mobGriefing is set to true, then mobs as even villagers should break blocks and take them. I can't understand why active mob griefing should prevent villagers from breeding. If your mobGriefing is false, then I could understand it. But maybe it's to late for me to understand the whole bug.
But I couldn't reproduce that bug for me, either with mobGriefing true or false.
(Sorry for my bad english.)
A invasion of the horrible ghost blocks! xD
(Sorry for this unhelpful comment...)