Project should only build in agents that are in the Build agent group assigned to it

Steps to replicate:
1. Enable distributed build
2. Create Build Agent 'A' and disabled it
3. Create Build Agent 'B' and enable it
4. Create Build Agent Group and assign Build Agent 'A' to it
5. Create Build Environment and assign Build Agent Group [4]
6. Add a project
7. Set Build Environment to the Build Definition
8. Build Project

Expected Result: Project will not build because Build Agent 'A' is disabled
Actual Result: Project builds in Build Agent 'B'