On /ticket/<x>/media/manage/, all links on the image name for images under "Remove existing media" are to /ticket/<x>/media/manage/. This is because generateImageHtml in commons-selection.js uses image.descriptionurl in line 296 but this is undefined in the case of existing images because the object returned by /api/tracker/mediainfo/?ticket=<x> doesn't have a descriptionurl key unlike the response returned by the getImages function.