Same issue..My sorc character is experiencing exact same issue ( I submitted a CSR ticket a month ago and still no response from support..why am I subbing again). redid chapter X..no fix, I have on other characters done the chapter with no problem , though I did not I got a strange flutter in chapter X when my companion switched to Kaliyo, she appeared , then briefly disappeared, but then came back ( I am referring to my companion Bar on my HUD)