This behavior works on any hero, but is more noticeable on characters with high fire rate.
if you are not shooting, doing a dash and immediate slide with crouch will give you infinite ammo and allow you to shoot as soon as you start pressing the crouch button. This is the behavior I expected as...
Was able to replicate once in sandbox mode with 3 players. we both had around 120 ms ping. I was spamming+canceling ivy ult on the seven while he was channeling his ult. I picked him up while he canceled his ultimate early which stuck him silenced in an animation.