I have experienced this bug on a couple of my Blaster characters. My Villain Fire Blaster, and my Praetorian Electric Blaster. Whenever I use an inspiration, or an Aim type ability, it sometimes randomises the attack animations of my primary powerset. The animations will swap between Bright, and Bright Cast. After a while, it will go back to normal, but as soon as I use and ACC, or DMG insp (or the Aim type ability) it starts random again.