These two characters were pretty much side by side as you can see. Image taken with both clients shrunk to fit on one screen, taken in one shot.
I tested by switching accounts between which was logged in in which instance and the one on the right continued to show UNUSED tiles vs the proper display.
Interestingly, I also used two clients while claiming my gifts across my primary server (working skills in the main client) and it just flat out didn't show the serving tray or any of the plants in-pack as I claimed them in my second client.
I guess that's what they mean by "unsupported feature"
Edit: Four clients logged in simultaneously on my computer, the first one sees plants, the other three see UNUSED tiles.
