Tooltips of chromium are displayed on wrong desktop

[Michael]

I configured 10 virtual desktops and keyboard shortcuts CTRL-F1 ... CTRL-F10 to move from one to another

start chromium browser on one desktop
load cnn.com
point to one of 'home', 'video', 'world' ...
wait that tooltip is shown
change virtual desktop by using keyboard shortcut
the tooltip is shown on your actual desktop and can not be removed without changing back to the virtual desktop where chromium resides

I am using Precise Pangolin with all updates on an Asus Timeline X Aspire 3820TG
Only the integrated Intel Graphics are active. ATI card is not used.

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1006840/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[Michael (mijobe)]

it's hard to say which package forces this bug. also might be the graphics driver (intel_drv.so) or chromium browser itself. the last I think is very unlikely ...