The PTR will be getting a new NPC soon that will be unique to the PTR server who will be selling the new Bags of Fortune.
We will be introducing a new vendor to help with this issue, who sells PTR-exclusive Bags of Fortune. These bags contain all the new class-specific items that have been introduced in Patch 2.4.3. Once the vendor is available, they will be located in all town hubs.
However, this vendor didn’t make it into the first patch in time for PTR launch. In the meantime, we’ve hotfixed a temporary solution—all normal Rift Guardians will drop a guaranteed PTR Bag of Fortune. Note that this loot will only drop from Guardians in regular Nephalem Rifts and not Greater Rifts.
We hope this eases the PTR testing process and look forward to hearing your feedback!