Go to the link below (or the next if the first doesn't work -- it's about to move)
Consider the tag AMBER. The table says there is one entry in the Legacy category. But, if you click on the "1", you get a "Nothing Found" error. You get this error because the single post with tag AMBER is in the category FAQ. However, the same post is correctly entered into the FAQ column under the tag Input Files.
There should aso only be one post for the Derivative tag in category Legacy.
The other entries all seem to be ok.
The only thing I can see that is obviously different about the category Legacy is that I provided a description for it, but not for the others.