Unable to build standalone if Unity folder name contains slash

To repro:
0. Rename Unity folder to "Unity/folder".
1. Start Unity, create a new project.
2. Build and Run.

Actual result: Standalone is not built, errors in log:

UriFormatException: URI scheme must start with a letter and must consist of one of alphabet, digits, '+', '-' or '.' character.
Build completed with a result of 'Failed'
UnityEditor.BuildPlayerWindow+BuildMethodException: 3 errors

Expected behaviour: Standalone should be built with no issues or clearer error text should be shown.

In 5.6 if Unity folder name contains slash Unity failed to start.
In 2017.1.0f1 I get launcher but cannot start project.
In 2017.2 and 2017.3 errors appear on start.