Blender freezes when rendering is started without a license

After installing V-Ray for Blender, if a V-Ray for Blender scene is opened on a system without a V-Ray for Blender license and viewport rendering or production rendering is started accidentally, a sign-in confirmation dialog appears and Blender freezes.

Also, why does V-Ray for Blender attempt to acquire a UI license when Blender starts?

As with V-Ray on other platforms, shouldn’t the UI license be acquired only when rendering is initiated, specifically when the .vrscene is being generated?

Confirmed with V-Ray for Blender 7.40.