Odd/even class and grouping field

The default template use odd and even class for each items.

The issue is when you use grouping field, the odd/even classe doesn't reinitialiazed at each group.

For example suppose you have a view which send 8 results, group by a group fild which has 3 values A, B,C, such as
A -> 3 items
B->3 items
C-> 2 items
I have the field
A
item 1 -> odd
item 2 -> even
item 3 -> odd
B
item 4 -> even
item 5 -> odd
item 6 -> even
C
item 7 -> odd
item 8 -> even

If i want to display my items in 2 columns with this properties
odd -> float:left
event -> float: right.

The correct order dosen't match because the first item is not the same.

I think the cprrect implementation would be
A
item 1 -> odd
item 2 -> even
item 3 -> odd
B
item 4 -> odd
item 5 -> even
item 6 -> odd
C
item 7 -> odd
item 8 -> even