When clicking the 'Use as Featured Image' button, lightbox does not go away.

[aaronholbrook]

This is very confusing behavior for every client that I have run across. It's confusing that after clicking a button that should clearly be the end of the interaction, they then have to click outside the lightbox, or click the close button on the lightbox.

Suggested resolution: it should ideally imitate the 'Use this image' button when inserting an image into a post and disappear when the button has been clicked.

What version? New media modal closes for me in 3.5.

Apologies!! This had been a persistent issue - ran into it yet again on a client's site, but failed to recall they had not updated to 3.5.

Thanks for the catch Helen!

Duplicate of #18708.