Problem still exists in 4.1.89.3171
But, I believe I found a workaround for now. Using the "cancel action" button to cancel an action in combat (escape, right click, I have my right click re-bound to middle click so I could put the camera on right click) seems to cause the bug to happen. So what I did is tried using the "cancel action" click to click on an item in the inventory, once doing this, it seems like bug goes away until you re-trigger it. Still something that definitely needs to be fixed before the final release, but knowing how to workaround it should reduce some of the headache for now.
