Backstory! Today I was very pleased to discover the Embossed Serpentine Platemail recipe. I made it and wore it quite happily for several floors until just before descending to the ice floor I happened upon an anvil. Reasoning that I had the materials to make another one should Krong be displeased, I placed my armor on the anvil and it was, of course, cursed with -2 hyperborean resistance. Later on that same floor I happened upon another and it cursed my new Embossed Serpentine Platemail. So I made another. Upon opening the very next door I found ANOTHER anvil. Embossed Serpentine Platemail number 3 was blessed. Hooray. After changing out my armor (I dropped the old on to Mister Eyebrows rather than into the inventory directly) I noticed that the two cursed armors had stacked. This didn't seem right to me, so I alt+clicked it to unstack. The armor remaining in my inventory retained its name and stats, but the one I placed on the ground was returned to its natural uncursed, unnamed state. I do not think this is supposed to happen. Is it supposed to happen?
