Grouping on Column Doesn't Work on Windows 8 in Chrome and Firefox

[Craig]

I apologize for double posting this. But the first link for some reason isn't accessible now.
For reference for the Telerik Admins the first link is here:
http://www.kendoui.com/forums/ui/grid/group-on-column-doesn%27t-work-on-windows-8-in-chrome-and-firefox.aspx

I am having trouble with grouping multiple columns in Windows 8 with Firefox and Chrome.  IE10 does not exhibit this behavior.

I have two examples for review.
http://screencast.com/t/KLesmvZn
http://screencast.com/t/nMMBHcnk

Nikolah replied in the original thread with:
"
Hello Craig,

We are unable to reproduce
the problem. Here is a screen cast captured in Chrome for Windows 8 against
demos.

Regards,
Nikolay Rusev
the Telerik team
"

[Nikolay Rusev]

Hello Craig,

Indeed we were able to replicate the issue. It is reproducible  only when you drag using the mouse. We will do our best to address it as soon as possible.

As a token of gratitude for bringing the problem to our attention I've updated your Telerik points.

Regards,
Nikolay Rusev
the Telerik team

[Craig]

Looks fixed in Q1 2013 Released. Thanks Telerik for your awesomeness! :-)