I've notice this bug that seems to happen in least two villages so far, first one I thought was mob slained but it happened again in a desert town that had more in it.

I started digging under the main square fountain of said villages, bells are intact, and in turn I found a Mine Shaft and Stronghold. After clearing and gathering as much loot as I can from both and resurfacing, I noticed the village and town had no villagers when I know they both had them. As it happened twice so far I thought to report it as a bug as revisiting villages is going to be an issue with this.

(Come to think it happened one other time a few months back when I used Eye of Ender to find the stronghold. Looted and made a temple above the end portal which i realized after the village was empty, no mob suggested to have caused it as if they failed to load. Didnt think about it then as I was trophy hunting at the time.)

Currently on Playstation 4 ver. 2.05