TLDR:
[+] Set up your Quantity of the Item you wish to craft
[+] Begin crafting
[+] Close the "Craft" window, which is essentially the Folio for that workstation
[+] Open Auction House from Convenience
[+] You can now view Auction House while Crafting items
[+] If you'd like to review recipes, open the Folio via Hotkey or Menu at the bottom right
With 1.7 released today you have the ability to use the Convenience button in the bottom right if you are a Patron via paying for a subscription with either real money or credits.
This button allows you to use the Auction House wherever you are, however you still require a mailbox to retrieve anything you purchase. Still, searching is nice if you need to keep tabs on a particular market, or just to inform yourself of the market prices as they ebb and flow with the new patch.
When crafting at a workstation you will receive a message stating that you cannot view the auction house while crafting:
"You cannot use Auction House and Craft at the same time."
Actually, you can.
It appears that the Auction House not opening up is dependent upon the Craft window being shown.
Simply close it the Craft window (the Folio essentially), and then open the Auction House tab. This will not cancel your current crafting actions or your queued up quantity. You can open up the Folio afterwards if you need to review mats or anything like that -- it just appears to block the Auction House window initially from the Folio that opens up with the workstation you interact with.
Putting this in General section since it doesn't seem like a bug or exploit -- just seems like lazy dependency coding on Trion's part.
Hope this helps pass the time crafting away 333 pieces of Lumber, Fabric, Leather, and/or Ingots!