Explicit tag not spoilering

I went to set Explicit as “spoilered” a moment ago, and it doesn’t appear to be working. There are a number of images on front page that very clearly show sex/full frontal nudity. I’ve checked their tag list to make sure, and boy are they explicit.

uh? the explicit spoiler is working normal.

Are you sure that you stuck it in the spoiler list and not the visible list?
 
If not please paste (flip the editor to simple mode to copy) your visible, spoiler and explicit lists and put them in a private message to me.