User is not asked to enter build's name on making a standalone build rather he is asked to select a folder and the build is made with the current folder's name.

Steps to reproduce:

1. Open a scene.
2. File -> Build Setting -> Add Open scenes.
3. Observe that user is asked to select a folder rather than being asked for a name for the build.

Note : Occurs for all platform except Android.

Working Fine With : 2018.1.0b8, 2018.1.0b7, 2018.1.0b6
Occuring On : 2018.2.0a1, 2018.1.0b9

Environment:
Occurring only on Windows.