When are we going to see a fix for items not being marked as dispatched for multi-item orders?

I happens every single time I have an order with more than one (different) item in the order, and has been happening for at least 6 months.

I have one right now, it says 'dispatched 5th April' but is still there in awaiting dispatch. The only way round it is to go into the order, mark it as not dispatched, refresh the page then mark it as dispatched. But even this isn't foolproof, if there are 4 items in the order I have to do this 4 times.

It's poor when a well documented and much-discussed bug is allowed to be on a 'world class' retail site for so long without being addressed.