Audio cutting into sequence panned left

I'm having an issue recently (I think as of the last software upgrade) where anytime I cut a clip into the timeline the audio is all coming in panned -100. When I play the audio in the source it comes out of both speakers, but once it's in the timeline it's panned left and only comes out of the left speaker. A huge pain and I have to manually put each track back to 0. I've looked everywhere to see if this could be a setting issue with no luck. It's happening across multiple projects and sequences.

Thanks for any help, it's driving me nuts!

(Premiere 2017.1.2 on a mac)