This never happened before but happened twice during 1st and 2nd boss fights at vHOF today. Fist of, at some points my healer's staff became a dagger look although skills were cast rightly. Then at some points, I couldn't cast healing spring although I kept pressing the key, while other skills could be cast it was just that one key on both bars couldn't work. Next, my character would become invisible, then the image would freeze and either I had to force quit or game kicked me to login screen due to "message rate limit". On PC NA, windows 10, using ethernet, laptop with GTX 1070.