I think it’s a new anti-feature of the JUCE forum, that all browser shortcuts for “search in page” functionality are captured and redirected into the forum’s search function.
I consider “search in page” functionality an essential feature. Even if I arrive in a thread after a search, I may want to quickly locate the keyword I am looking for in a lengthy thread.
There are very few websites that hijack such basic browser shortcuts, so I believe a lot of power users depend on the ability to search in the contents of the currently loaded page. Now I have to find the feature in the browser menus, which I haven’t had to do since forever.
Not even google.com does this, the sole purpose of which site is searching.