OK, so I am not crazy (I previously edited out my original post).
So, ctrl+f does not allow you to search using your browsers search. For example, I am perusing The official Cthulhu and ChImp thread - Try our new Dreamcast flavor! and I want to find any post that mention PCE, PC Engine etc. However, I can’t due to the forum hijacking ctrl+f from me.
Is there a way to turn this off? I can’t imagine that is a feature that people want/enjoy since the forum search is OK for finding threads and some posts but it’s awful for searching a thread.