Usually, villagers dont recognize ther villages and they never go back to ther village.
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Confirmed for 0.14.2 but might have been because it was a world created in 0.14.1

I do not get this problem. Try making another world and try it out.

I created another one. In 0.14.3 . With the same seed. Might be that there is a stronghold near the village.

If they are too far they can't go back and they don't sense each other, they sense by the doors.