Weird Arena Bug

What you were expecting to happen, and what actually happened?
I started the arena and did a first combat with the weapon Pan’s Lute.
I didn’t close the arena, I went straight for the second battle, but the game had changed my weapon to Order and Chaos (which I used in the previous arena).
Now I have had this bug before if I didn’t do the first combat and close the arena, but never in-between fights.

What are the steps to make it happen again?
Play a fight with a weapon, go for a second round, be surprised?

Do you have any screenshots or video you want to share with us so we can see the problem? Attach them to your post!
Nah sorry, I didn’t think to take screenshots at all. :confused:

Hmm, that’s a new one to me. Will pass it onto @Full for a further look!

Thanks. Just don’t forget I am THE bug-magnet, it might be some exceptional bad luck there. ^^