With post #2171217, I noticed when I added the tag feral_penetrating_human, it did not automatically apply the human_on_feral tag with it. When I added human_on_feral manually, it similarly did not apply the bestiality tag. All of these are implicated as you can see in the wiki pages, but the post's tag history shows they weren't applied until manually added.

I think I know what's going on here. I'll make a script to update the outdated information.

Implications should be properly applied on future post edits now. Sorry about that.