See https://en.wikipedia.org/w/index.php?title=Wikipedia:Village_pump_%28technical%29&oldid=708962869#GlobalUserPage_and_bad_images for the initial report at enwiki VPT and an example. If an image is on a local but not the meta bad image list, the image can be put on a meta user page and displayed on the local wiki, bypassing the bad image list. This can be worked around after the fact (by creating a local user page) but ought not happen in the first place.