I'm having this happen as well. It seems to be permanent to my current character. I had to log out and log back in to change the audio to my headphones and now I haven't been able to use my character since. The mouse is also unresponsive.

Windows 8.1 64 bit

I made a quick video showing what is happening. Mostly wanted to see how shadow play worked but here you go: http://youtu.be/G-uUHnwNgrk

This happened to me today with one of my friends as well. We logged into a server at about the same time, he was invisible to me. I couldn't hear his gunshots or anything, but I could see and hear the impacts.

I could also see him open and close doors, but not the character itself.

The radial menu would definitely be a plus here. Faster, smoother access to key commands while segregating out the context sensitive options to a use button.

Maybe as a script, but being able to push actively fighting players around would be too easy to abuse. Being able to move objects however would be nice.

The radial menu would definitely be a plus here. Faster, smoother access to key commands while segregating out the context sensitive options to a use button.