This one has been reported, but I just came across it myself:
In Black Cove (have not seen this until entering Black Cove) Scarlett randomly emits a flashing green aura for a few seconds. Bug has not killed her or crashed the game for me, just happens randomly.
That's caused by the game thinking she has two pieces of equipment on at the same time. Remove her gear from the paper doll (start with the weapon), and you should see that two things were on the same spot.
