If Featured Image is selected, but not saved, editing the image will drop the selection after a save

[DavidTheMachine]

To reproduce:

Create a new post.
Click on an image to select it.
Click on Edit Image link, edit image, and save.
Image selection menu has changed dimensions, and the selection state has returned to its prior state.

If a featured image has already been assigned to the article, selecting another image, and editing it will return the user to an image selection screen with the prior featured image selected.

[DavidTheMachine]

Screencast of the featured image workflow

[DavidTheMachine]

The steps to reproduce in more detail:

On the post edit page, click on [Set Featured Image].
This triggers the media selector view, in which the user can select an image.
Click on an image, then edit it.
Leaving the image editor view will return the user to the image selection screen, show the same selection state as when it originally loaded.

For the case that the Featured Image is already selected, selecting a different one without saving it as the featured image, then clicking the Edit Image link will wipe the most recent selection state, returning the user to the default state.

For the screen recording I uploaded, I go through several scenarios, one where the featured image is already set for the post, one where it's cleared out, and another where I upload a new image.