Experienced two glitches today. First was the one you mentioned, where it fires all 6 shots at once. Second one is where it fires as intended during ADS, but that shot only deals 45 dmg. These glitches were experienced in pvp, specifically the iron banner. Reapplying patch 1.1.1 effects without proper testing was a bad move, it really screwed up weapons like the vex and bow which are categorized as fusion rifles. God knows when the next fix is gonna come or even if it's gonna be permanent. Edit: I should add that these glitches were quite frequent, even after swapping weapons.