In the latest build of Patch 10.1 PTR, Blizzard has introduced two new UI improvements to the Work Order menu to make it clear whether or not buyers have supplied materials.
New Material Icons
In Patch 10.0.7, Blizzard introduced the ability for people to place Public Work Orders without supplying all materials. Despite them adding a warning pop-up message right before you craft the item, it can still be a bit unclear on whether or not players have supplied materials.
