Sometimes help contents is not scrolled to the right position

If I press F1 on a class method, Creator opens a help window on this method. Sometimes the Help window is not scrolled to the right method, but scrolled to the bottom on the help file. In this case I press F1 again, and the Help window is scrolled to the right point. See attach. I pressed F1 on columnCount() method and I see the Help window is scrolled to the bottom instead of columnCount() method.

Actually this is not 3.6.1-specific, I saw this behavior in many previous versions.