I'm trying to make a village, 90x90 wide and the whole entire area is lite, I have 80+ beds; all nearby and the villages keep despawning, and not breeding. I have a 5xxx5xxx5xxx5 area that is all lite (5 is the glowstone) x is grass

attachment is my photo of my village; I have tried breeding 2 zombie villagers, maxing out their trading cap & maxing their food inventory with NO LUCK, and I don't have any villages, within 8,000 blocks. I've looked with 5 of my friends, for a couple of days.

I'm going to build houses, but i doubt it'd work I have 60+ doors + 80+ beds and no luck; I have every single item for profession villagers and it doesn't help

All relates to MCPE-47831
MCPE-50268
MCPE-51014
MC-156478

I have bedrock edition of Minecraft on Xbox One and this only OCCURRED with the newest update 1.12.. It was just fine in 1.11 and 1.10