I am using the build 3207.
I have not installed any plugin recently.
Ctrl shift F do not works anymore. Going through the Find menu, it works. The shortcut in the menu is ctrl+shift+f.
sublime.log_commands(True) in the console and ctrl+shift+f is not logged. ctrl+shift+i and ctrl+shift+l both works and are logged in the console.
The sublime setting file is short and has nothing about the search command and no custom shortcut