The villagers don't breed even though they have all the needed conditions (sufficient food, beds and they can be "willing" which makes love heart particles) but they don't breed.

We try with 3 villagers (2 farmers and 1 with no profession), we waited about 1h and nothing. We gave them all the needed conditions described above but still nothing.

We have made a short video to show you the issue in details. (the video link is in a text document because it was too heavy)

Just after the video we tried the experience with 2 famers and 2 with no professions and the ending was the same, no breeding.