link url – not saved

Hi,

I have uploaded – say 10 – images ready to insert into a post.
I hit the “show” link next to each image to edit image details.

I then remove all text in the “Link URL” field.
I also select the radio button for “full size” images

I do this for each image then hit the “save all changes” button only to find that these changes have not been saved at all!

Is this a bug or a conscious decision by the developers?

thanks
Andy