I had a strange bug just now. My keyboard inputs for eating and evolving (e and v) were being completely ignored. At one point I had a hunter down and the other three out of LOS, tried to eat him and... nothing. Left the corpse, came back...nothing. Couldn't eat it. Just looking at a body, nothin' doin'. I ran off some, was able to eat some critters until I could evolve, found a nice spot and... couldn't do it. Hit V...nothing.
After spamming the button for a while I eventually started evolving, in the next fight I downed two hunters right next to each other, scared the other two off and went to eat the bodies and again. Nothing.
It was really pissing me off because it ended up costing me quite a bit of health. Same shit when I was stage 3 at the relay, I'd have someone down but couldn't eat them.
The only thing I can think of is that there's some DoT from the toxic grenades that lingers for a long time, either that or a connection issue, some weird stuff was going on with lag as well.
Edit: Double frustration, people were dying and I wasn't getting messages about it. I thought I was about to lose the round when the "you win" message came up. Wat.