Still in 19w13b, they keep spawning on my village only bottom half slabbed roof. I've made sure they are bottom, too.
Still in 19w13a, just tested with a cured zombie villager mason, I placed a smithing table before curing him, and now he works and restocks clay there.
Still in 19w12a, unfortunatelly they didn't add this one to the list on this snapshot. Shame, can't really enjoy a new survival world if I can't get baby villagers.
Same thing since 19w11a to b, I have tried in different worlds, Survival and Creative. Once there are three beds, three workstations and two villagers with enough food, they start getting lovey dovey but no babies are born. Please Mojang remove contraceptives.
Can confirm that swimming animation displays outside of water, in my case when opening doors and using equipped tools and blocks with right click.