How to reproduce

• Edit a photo gallery
• Add images image1, image2, image3 in gallery repeater
• Save content
• Re-edit the content
• Delete the image2

Actual behavior

• the image2 is well deleted
• in photo gallery image1 and image2 are displayed instead of image1 and image3

This is a cache issue, as the url of image is the same http://server.com/www/_contents-images/content-name/photos/2/image_max70x70?
If delete cache of the browser, image1 and image3 are displayed