Hey Ludor, i founded some glitches:
1- In the upper path of the IWBTG area (the one with that falling tree), if you jump from the right cloud you can go offscreen. When you go offscreen

will turn invisible and if you try to continue walking to the right, some screens will appear and

will die in a buggy screen.
2- I don't know if this is a glitch, but accidentally i pressed "R" after beating Ash and Ash revived.
3- When i beated Wario, he falled over

when he died and the white "power" balls came out from him and The Kid died.
Questions:
How it's supposed to reach this area?