Topic on User talk:Masked Turk
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If you check my Sandbox page on the TOC, the headers where the icons are inserted have also inserted a weird character into the TOC links.
For example:
http://pcgamingwiki.com/wiki/User:Andytizer/Sandbox#.C2.A0_Fix:_Patch
Using the {{Ff}} template in the Header also inserted C2.A0 into the link. I think the C2.A0 represents the spacer & n b s p ;.