Example:
http://danbooru.donmai.us/posts?ms=1&page=39&tags=suit+1girl+order%3Ascore&utf8=%E2%9C%93
http://danbooru.donmai.us/posts?ms=1&page=40&tags=suit+1girl+order%3Ascore&utf8=%E2%9C%93
http://danbooru.donmai.us/posts?ms=1&page=41&tags=suit+1girl+order%3Ascore&utf8=%E2%9C%93
http://danbooru.donmai.us/posts?ms=1&page=42&tags=suit+1girl+order%3Ascore&utf8=%E2%9C%93
post #2465740 appears on all these pages for me, and will hopefully continue to do so otherwise I'll look rather stupid. It's far from the only post doing so in this particular search, as well. I haven't seen it before with other searches, but I rarely perform ones that return 400+ pages of results.
Is this a known bug?