There is no guarantee on the order of the data so you'd need to sort it in some cases. Sorting can be done in O(n log n) so it shouldn't be a huge problem. I'll consider pre-sorting on the server in the future but please don't rely on it!

The reason for the unsorted output is likely that I've switched to a database backend that can run things in parallel now or maybe it just went unnoticed until now for some other reason.