So after posting this, I went and took a hard look at the back ... and sure enough, it had plastic on it. It was hard to see/feel, but was able to get a corner pulled up and removed it.Mine didn't have any plastic on the back, only the front. That said, no weird smell from mine either though.
Right, there's certainly something strange with the CEC. I experienced odd input switching behaviors as well, so I turned all the CEC functions off. This is why I'm using optical instead of ARC, since the CX won't allow you to use ARC without the CEC functions turned on.There are HDMI issues for sure on the cx...my shield is flaky (and shuts the tv off when I change inputs) and yesterday the tv was stuck in a loop switching constantly between hdmi1 and 3 for no reason. Had to unplug the tv for it to stop. Hopefully a firmware update fixes it...I am on the .60 latest Korean fw
I will say after I updated to 03.00.60 firmware, the odd CEC input switching issues went away ... but I just left the optical setup since it was working fine for me. I do plan to replace my UMC-200 with a 4k capable unit soon though; and will route everything through the new unit when I do.