Steps to reproduce
1. Upload a new image into Documents and Media and set a description
2. Create a new Web Content and insert an image to open the Image Selector
3. On master, click the eye icon to open the Image Selector. On 7.2, click on the image itself to open the Image Selector.
4. Click on the pencil icon to open the Image Editor
5. Edit the image and save
6. Click the pencil icon again
7. Edit the image again and save
8. Inspect the second edited image in Documents and Media
Description in the second edited image is the same as the description in the original and first edited image images
The description in the second edited image is "undefined"