I was using the 1.6 code base and do not see the problem. When I tried it with the latest public release, 1.5.2.0, I do see the problem. The 1.6 code base will be released in a week or so.
Until then, refreshing the special column in ColWidths changed avoided the problem for me.
Private Sub gridControl1_ColWidthsChanged(ByVal sender As Object, ByVal e As GridRowColSizeChangedEventArgs) Handles gridControl1.ColWidthsChanged
Me.gridControl1.RefreshRange(GridRangeInfo.Col(specialColumn))
End Sub