I am not a speedrun er of smb,and the bug of finder is not me.I even don't know that is it real.But this bug is more surprising than any other bug in smb1 I have known before.

I am bad at speaking English,so if there is any impoliteness, it is not my intention.

Well this does not save time you should post this on the discord I could just be a problem with the emulator not being accurate

sorry，but in China, it is illegal to visit discord

It could be the ROM as well

@ShangXiake that's allright

This is a modified or corrupted ROM

I figured maybe

Maybe the ROM was broken? The Goombas changed into Toads

I've only seen the enemies change into Bowser's butts, which was made by HappyLee

He uses AOAUIG gamegeine code

I think this had some other influence

I agree with you.