Media Selector: Media Selector dialog is not closed when save change from image editor

Description

Steps to reproduce:

1. In edit view, open the Media Selector dialog box.
2. In this dialog box, select a content item.
3. Open its context menu and select Open in Image Editor.
4. Update some of the image's fields and then choose Save as a copy or Replace original image.

Expected result: ** 

The Media Selector dialog box is closed.

Actual result: 

The Media Selector dialog box is not closed.