Can't remember all of the broken tags I've found, but uzumaki_karin is extremely broken for example, like no tag has ever been more broken. I know there's more broken tags out there.
Yes sorry I should have been more specific. The broken tags in question do not work properly when entered, and only shows a select few hits when there is actually a multitude of images tagged with it. Keep in mind I have checked this with a clean blacklist and also on another browser/machine both logged in and logged out. Im not sure what's causing it, but it does feel like the tag has had a grammar correction or similar in ythe database but not all instances has been updated properly.
I think that some pictures get deleted, but not all of them seem to be properly deleted: from what I've seen so far, in terms of "rigidity", a picture may be: either fully functional; deleted, but still has a thumbnail; deleted, but it still takes up empty space in the list; fully deleted.