Quick Look: How to return to unindexed view using mouse

After selecting some images and pressing ≪Spacebar≫, I click on the index button: Grid button

This is what I see:

Without the keyboard (Ctrl-Enter), how do I get back to the unindexed view?


Solution 1:

On 10.13.2 a single click on any image returns to Quick Look on just that image, as hover on any image highlights with a blue rectangle.

Solution 2:

Testing it on 10.13 it seems you have to double click on the image you want to return to the full size preview of.