[1.2.3] Grouping Grid Column header resize 'funny'

[jschwarz0]

Hi,

When resizing the columns of the Grouping Grid you do not get what you expect.

You can see it in the example:
http://extjs.com/examples/grid/grouping.html

Versions/etc...

OS X
hosted and all browsers

Steps:

resize the right dragger of the "Change" column header.
Note that it does not resize to where you stopped.
(It seems to split the resize somehow).
The "Basic Grid" seems fine.

Thanks,
Jim