Quick 3D should not be installable without Shader Tools

The 6.0 alpha has Quick 3D and Shader Tools as selectable components. This is good.

However, what happens if one checks Quick 3D but not Shader Tools? Will it automatically install it (since Quick 3D binaries are disfunctional without the Shader Tools libs being present), or will it result in a broken installation? It currently seems with the alpha that it is the latter.