Finley here from the Social Care team at Shopify. Thanks for your question!
I understand that you're looking to print packing slips for your orders.
You're able to do this for each order individually by selecting an order that has already begun the fulfillment process.
Once a shipping label is printed, or the order is marked as fulfilled, you can click More and then Print packing slip like so:
However, for the update you mentioned, it sounds like you're referring to the temporary issue we had with the Order printer app earlier today, where the button to print packing slips in bulk was not visible.
This issue has been resolved, and you should be able to print packing slips in bulk again.
You may need to clear your cache or try this from another browser, where you should see this work as expected.
I do hope this helps, but please let me know if you're still having issues, or if there are any details I can clarify further. I'd be happy to take a closer look!