Only the distance to the west where villagers can find beds has shrunk from 16 blocks to 8 blocks.
Observed Result
If I place a bed more than 8 blocks to the west, villagers will not be able to find the bed.
Expected Result
Villagers can find beds on the west side for up to 16 blocks, and they have green particles.
I cannot reproduce this. A villager at X = 0 detects a bed I place at X = -16.