If you modify a Repeater's model property from 1 to 2 (the count variant) and so forth, the items are not in their correct stacking order when they are completed.
The stacking order is not correct until the call to setModel has been completed.
If you run the following example you will see (from the console output) that the "yellow" rectangles are sometimes stacked on top of the blue rectangle, that is supposed to be on top.
I would expect that the stacking order should be in a consistent state when the items are completed.
This prevents us from fixing issues such as