Am running Gnome 3.8 on 13.04. When I run Chrome or Chromium with its windows maximized (and the GTK+ theme option) and using the Chrome/Chromium option "use system title bar and borders" deselected, I'm unable to select the first couple of tabs to change to them. If I restore the browser and move it away from the corner it works. It seems that there is a zone of about 20-30px from the left corner on both the x and y axis where mouse input doesn't work.
I used Chromium has home base for lots of my activities... is there a way around this without having to add back in the title bar and borders?