New Post: bug? "tree ordering" does not work, while tree group by another filed.

i am useing
Composite C1 4.0 Beta (Internal build)
Build no. 4.0.4792.20469

i created a "global datatypes" named: PageGroup

PageGroup has 3 fileds:
1）PageId
Field type: Data reference
Reference type: C1 Page

Is title field: yes

2）GroupName
Field type: String


3）LocalOrdering
Field type: Integer

Tree ordering: asc

then, i created 3 date item:
PageId GroupName LocalOrdering
page1 group1 3
page2 group1 2
page3 group1 1

after saved, these 3 items arranged correct as:
page3
page2
page1

that's ok, but then, i set the field GroupName:
Tree grouping: Group by this field

so, the above 3 items arranged incorrect as:
page1
page2
page3

that is : only set the field LocalOrdering with tree ordering asc, data items arranged correct, but if set Tree grouping by GroupName at the same time, data items arranged incorrect.