Issue with TwwDataGrid Title alignment

I'm using a TwwDataGrid with many columns.
In design time, I set every few columns to the same 'GroupName' so they appear under the same band.
I want to have the top group aligned to the center, which I did by setting the grid's TitleAlign.

As soon as I set the first column's title to something else, e.g. gtaLeading - > The group title alignment of that column is also changed accordingly. Which shouldn't happen.

I did this on Woll2Woll's demo.
Here are the pics:
* At first, everything is aligned to the center.
* Then, I change the first column's property to: gtaLeading
* See how the group title also shifted to the right: