On an object with multiple UV sets, the set to which a texture is projected to is affected depending on which UV set is selected in the "UV Sets" drop down menu of the UV window.
Observed Behavior: A bottle has two UV sets. Depending on which UV set I have showing in the UV editor window, affects which texture is assigned to which UV set.
Expected Behavior: UV Set assignment should only be dictated by the UV Projection node of a texture, and should not be affected by which UV set is currently selected in the UV Editor Window.