Not sure if this is the right forum, but anyways...
I am using Code::Blocks svn 8395 on Fedora 17 i686 ( I installed codeblocks from jenslody's yum repo).
And when I start typing fprintf( I get a little popup showing the list of arguments to fprintf, which is nice, but it hangs over the cursor, which isn't nice.
I have a screenshot of the problem attached. Note where the tooltip is in relationship to the cursor position.