It's like that for non mods, the only pictures you can view are the ones sent by an image sender. Gyazo, imgur, etc.
You can only work around it by using image uploading services and linking them, until the issue is fixed.
Dw everyone has the problem (not mods though) but it surely must be fixed soon, i already have made a thread about the problem. Its been like this for weeks along with glitched voting poles.
As Source Said This Is A XenForo Glitch/Problem, So Probably Not Going to Be Fix Till Developers Of XenForo Take A Look At It