"Proofen..."

You're misinformed. It's not a bug. I like it. It's a nasty exploit. It doesn't give you increased attack speed, not at all. Let's take it from the top:
A gun and sword functions fundamentally the same. Both have x amount of hits/shots before they need a bit of time before they can be used again.
On a gun, all attacks look the same.
On a sword, they don't.
Shield cancelling is no doubt an intentional feature. If you say it's a bug, I say it's been around since before I started playing and that obviously proves that it's a feature, intended or not. A shield cancel cuts your animation short slightly and makes you use attack #1 if you use your weapon again. You don't notice this on guns since all attacks are the same on them, however. To make sure you can't abuse it for infinite ammo, you will reload upon firing the rest of your bullets. The same applies to swords because they use the same system and thus, you can't shield cancel a sword to hit more than x amount of times where x once again is the amount of hits the sword has as usual. Upon using that last cancel attack, you are sent into the reload animation. However, swords do not have the animation, only the wait time. When this wait time ends, you can use the weapon once more.
So, where does switching come in here? Well, you shouldn't have your gun clip or sword combo cut because you execute shield cancels and switches fast, should you? The only logical solution I can think of is to have the hit counter simply reset. If the combo were to be cut, it means you could probably abuse this to use sword combos faster. Imagine someone poking you with a Final Flourish and then slamming the second hit of their Gran Faust at you in Lockdown. Now THAT would be overpowered.

People naturally abuse the mechanics but solving all this would be pretty hard. You could keep the timer for individual weapons but that wouldn't be enough for say alchemers as you don't shield, switch, shoot, shield, switch back, and shoot faster than you shoot, wait a bit, and shoot again.

"Your "oh so terrible bugs" only affect at most, 2% of players. The arcade being primarily freeze+poison affects at least 25% of people."

*Holds Skelly Helm*

Sez you...

I didn't prove these, I just made these conclusions based on my 2000 hours of playing ;D
I'd like to see some more scientific prove on these matters, although I think I've pretty much gotten it.

What's a **** *** ** **** ***?

Thank you. I think I tried to be a sarcastic jerk with that post but failed. Sometimes I try not to and become anyway sometimes. I think I go a bit bonkers when I'm on here.