This was originally just a little discovery regarding Marth's Up+B, but after some further testing it's been found to happen with everyone, to varying effect.
If you use an attack that puts you in recovery special (Marth's Up+B, Falco's Side+B, etc.), as you know, you'll have a special landing animation that's usually more laggy than you'd like. Most people avoid this by recovering to the ledge. (Ike doesn't count, basically)
However, if you do recover to the ledge this way, the game sets a special flag that makes you unable to IASA your next landing. As you may or may not know, all characters have two different landings - a "heavy landing" that comes from fastfalling or falling from a long distance, and a "soft landing" from landing normally and not from a long distance. Soft landing can be IASA'd as quickly as frame 1, though the full animation lasts around 6 frames. Heavy landings have about 15-30 frames of animation, depending on the character, but they can be IASA'd on frame 4.
Also, the flag is reset once you land at all. So, getting up/rolling up from the ledge doesn't reset the flag, but landing from an aerial does. In other words, as Marth, you can easily just ledgehop a fair and get the fair landing lag instead of the normal landing lag.
If you Up+B'd to the ledge, the flag makes you unable to IASA your next landing, so if you tried an empty SHFF, now you know why you're suddenly stuck on the ground randomly.
If you use an attack that puts you in recovery special (Marth's Up+B, Falco's Side+B, etc.), as you know, you'll have a special landing animation that's usually more laggy than you'd like. Most people avoid this by recovering to the ledge. (Ike doesn't count, basically)
However, if you do recover to the ledge this way, the game sets a special flag that makes you unable to IASA your next landing. As you may or may not know, all characters have two different landings - a "heavy landing" that comes from fastfalling or falling from a long distance, and a "soft landing" from landing normally and not from a long distance. Soft landing can be IASA'd as quickly as frame 1, though the full animation lasts around 6 frames. Heavy landings have about 15-30 frames of animation, depending on the character, but they can be IASA'd on frame 4.
Also, the flag is reset once you land at all. So, getting up/rolling up from the ledge doesn't reset the flag, but landing from an aerial does. In other words, as Marth, you can easily just ledgehop a fair and get the fair landing lag instead of the normal landing lag.
If you Up+B'd to the ledge, the flag makes you unable to IASA your next landing, so if you tried an empty SHFF, now you know why you're suddenly stuck on the ground randomly.
