https://www.youtube.com/watch?v=anYBF5h0TTc
If bastion uses his cannon shot just when his ult ends, that delay of ult weapon remains onto NEXT ult, so you can’t shoot immediately in next ult. they didn’t fix this for 2 years.
reproduce: shoot just when ult ends. then that delay of weapon moves to next bastion ult first shot. you can’t shoot first cannon shot for 1 second. brutal.
edit: