Hi there, to me, as a seller on aliexpress,
Situation A; this happens when we can not ship the order in time, this happens after like 11.11 sale, new year holiday and upcoming 329 sale.
1.The count down shipping time is about running out, and we are out of stock actually.
2.We will ask a fake tracking number to update the shipping info.
3.Later, we restock the item and ship it again with real tracking number, and leave the real shipping number in order message.
4. Fake tracking number will show the order had been cancelled(it suppose to be, otherwise)
Situation B: recently aliexpress change the shipping policy.
Now, for orders above $2, we had to ship it via registered mail with tracking info, some bugs happens when, customers purchased 2 items, like $1.1 each, we had to ship via registered mail. But the bugs will not last long.
How should dropshipper do, act quickly after you find this happens to your order.
Get Sellers to response. That's a better choice than just leave the order there.