Sorry

When Team Damage is OFF, Green and Red Shells thrown by one teammate will not affect the other.

I think that's natural...

Also, if you charge up Samus' gun, you can sometimes shoot two charged blasts instead.

Same happens with DK's Wind Up Punch.

The tornado part of the boomerang, when reflected doesn't carry the link who throws the boomerang off.

If a character is in an initial jump animation, they will not grab an edge. This isn't usually a problem, as you don't want people to do their DJ and auto grab ledges all the time. However, if you SHFF with Falcon, he will not grab the edge until his jump animation is over (despite falling close enough to the edge to grab). Also Goku's DJ will not grab the edge at all

Look into this, I suggest using the same way that you check when a jump can be fastfalled to also allow the jump to grab an edge, something along these lines.

So, before I say anything, it COULD be caused by my friend's or my internet or something, so just in case it just that...

So I was playing with my friend on the internet, and for some reason, after about like 2 games, we'd both get a screen that's just a "Please wait..." screen. After a little of waiting, it says on the bottom of the screen "Problem updating status." From this, if I don't have to quit my game and I make it to the main menu before that happenes, my whole game is filled with glitches, and I actually have to restart my game to fix it. It's very annoying. I think I will make another post if I find a recording of me playing with that happening. If not, I'll demonstrate it when my friend has time.

Thank you for your time.

This has been covered in SSF2 troubleshooting. It's fairly common

When you throw Link's Boomerang downwards at certain platforms, it will fling backwards really quickly without the wind animation and clip through Link instead of bouncing off of the platform.

Multiplayer bugs like black screen and super long wait

Once again. This has already been covered. Please don't spam.

A pick-upped kamehameha will always face right.

when me and my friend try to play online matches, it freezes the game i am in the please wait screen

If Ichigo uses his D-Throw on a slope, it drills the foe into the ground.

Video coming later.

when wario farts (level 1) on an airborne opponent, the opponent will tumble (normal). but if the opponents lands on the ground while tumbling, they'll be stuck in that state for a few seconds before standing up (da glitch).