Sometimes in combat my character will re-sheath her weapons without me giving that command. I am not anywhere near the button to do that.
I have not figured out the exact sequence to trigger it consistently, but swapping weapons and immediately firing off Reflective Light seems to do it often. There have been some other times when it just seems to spontaneously happen in combat. I am not running any addons. 64bit client (I have not tried this in 32bit)
Here is a video. Notice she starts with a maul, swaps to double daggers, then fires RL. When she sheaths her weapons at the end, that is NOT intended. The reason she just stands there after that is that I was busy turning off the video recording, LoL.
https://youtu.be/PjnXcgxtkgE
ContraTempo
Carpe DM
Seize the Dungeon Master