This is a known bug: http://code.google.com/p/chromium/issues/detail?id=15434 You can workaround it by using the "System Title Bar and Borders".
** Bug watch added: code.google.com/p/chromium/issues #15434 http://code.google.com/p/chromium/issues/detail?id=15434 ** Changed in: chromium-browser (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/710125 Title: Chromium leaves trails when compositing is turned on -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs