Villagers in igloo basements can lose their profession

Can't trade with villagers in a igloo

What I expected to happen was...:
The village should be able to be traded with

What actually happened was...:
i couldn't trade with the villager

Steps to Reproduce:
1. locate a igloo via /locate igloo
2. go to the igloo with a basement 
3. click on villager

4. get the potions and the apple and try to cure it

5. it will shiver infinity until you add a work place

 

I know how to fix the bug though. All the developers have to do is have the igloos' with basements generate with a workplace and a bed in the basement.