Has anyone else come across this issue? We have just found out that people using IE 11 to view our site cannot see the "previews" of images that have been attached to a page within the last few months or so: all they see is a placeholder (see below). However, if they click on the placeholder, the image is shown in the viewer full size in the normal way.
We did not realise this as we use Chrome as our browser of choice ... and everything works fine in that! Some further investigation has shown that anyone using Edge or Firefox can also see the images, but everyone using IE 11 appears to have this issue!
Is this a bug in IE or in Confluence and is there a workaround?
Thanks in advance for any light you may be able to shed on this 
Capture IE 11.PNG