I recently uploaded my world to a realm and have noticed a huge issue with the villagers. Ever since upload the 2 villagers I had been using to breed completely switched professions to a job block that is occupied by another villager. Both "breeders" are constantly syncing to blocks that are on the other side of walls and are used by other villagers(I spent the time to make sure each villager was in a room with its synced bed and job block, had to do that 1 by 1 and this took 20 minutes each for the full growth cycle. And I have 16 villagers already sorted..) Upon finally managing to breed a new villager, while still a baby it is "syncing" and "unsyncing" with beds. Now correct me if I'm wrong but a villager whether it is a baby or not should not be able to sync with another villagers bed or job block. Also, the villagers which were originally farmers have switched to librarians and will no longer farm carrots. Removing all extra profession blocks and replacing them will all composters still does not switch professions nor does it give a job for the recently bred villagers. Something is completely fudged here... 

Edit: although this is in the original post I have been messing around for a couple hours now and even the original copy of the world that was before upload has been affected. And being that I focus most of my builds around villager occupations, I have 50% of my builds empty because of this bug and Im starting to get annoyed and am losing interest In the game.