I noticed that when switching weapons from my Divine Avenger to my Gran Faust, the yellow "energy ring" around my Divine Avenger stayed out, and was around my Gran Faust. I tried it in the reverse order, switching from my Gran Faust to my Divine Avenger, and the purple "energy ring" stayed out around my Divine Avenger. The false color "ring" goes away after about a second, but this visual bug might confuse some players who tell the difference between the two by the color of the "ring" not the color of the sword itself. Also, Thank You Nick for putting up the featured auctions which I got these from :3
I'm not on test server but this is a graphical issue that has been in the game for like how long :0