Daon Gman

This is not a bug.

Ive played a many sky block maps and the last thing you want to do is open your inventory while holding sneak over the edge of a block because it makes you stop sneaking . Thus they added the pick block option so you dont have to open your inventory. As proof same thing happens in Java version . its not a bug you are not supposed to continue sneaking when you open your inventory here is a GIF 

https://gyazo.com/3eb55f3b324629e93274b90406f50735

I dont know but i ran a game for over 5 hours and nothing spawned. But once i got a working model i started modifying it to accommodate more villagers 

My house is over 100 blocks away with iron doors

I use iron doors on my house to counteract duplicate village syndrome 

Using oak doors 

Unfortunately that design does work . I have that very same build the one made of prismarine in your picture in a survival world and have about an entire chest full of iron from it .

I play both the Nintendo Switch version 1.5.3 and the Windows 10 1.5.3 which are both the bedrock engine.

Now for some reason if built in creative it wont work. 

Java redstone mechanics not apply to this version of MC

I too am having this same issue where the resource pack has to be re applied on the Win10 version and on the Nintendo Switch. #CocoaBeans