1 . Gold and Diamond lasso cannot pick up villagers, you just open the GUI instead ( I managed to do it ONCE by accident and could not ever again )

2. If you pick up a zombie with a Diamond lasso, there is a chance you will put down a baby zombie instead. After picking this up and putting it down multiple times, it then spawned with a full set of gold enchanted armor it did not previously have.

3. Placing a mob down against a wall results in it ending up inside the wall and suffocating, often in the blocks above where you placed it. Even placing down on the floor near a wall they often take damage.

Hey, thanks for the report. It should be fixed in 1.1.6

Awesome, can confirm that all appears to be working as expected now. Thanks!