im on oprah gx (chrome based) and i have something similar.
during the monster's roll, one of the wheels didnt settle down, but started to glitch a bit and then spun up and now its rotating at infinite speed. :)
reload 'fixed' it. could continue and restart the turn, but i lost all my items and am back to basic fists 0 and 1 dmg.
so a restart is required.