One of our users is editing a publishing page. She has full controll of both the page and the image library that she wants to use. Still, when she try to add an image ("Edit Picture" under Page Image on the page) she is not able to choose an image in the "Select an Image - Webpage Dialog" window. Nothing happens when she tries to mark an image. She can not select an image. She is using IE 9. I use IE11 and have no problems with this operation.
I have never seen this before. Has anyone an idea of what is causing this?