Full size images are badly truncated, and when you click on them, MediaViewer doesn't load.
See https://www.mediawiki.org/w/index.php?title=Topic:Sdcuk73nuv7i3cmf&topic_showPostId=sdf3nvkxr3hs9qhk#flow-post-sdf3nvkxr3hs9qhk and https://en.wikipedia.org/w/index.php?title=Topic:Sdf3qvfyxvn5r4lo&topic_showPostId=sdf3qvjirzabifbg#flow-post-sdf3qvjirzabifbg .