Mario Builder 64 Funny Moments/Glitches?

I played this game that just came out (?) a lot today and here's some funny moments/glitches? lol
Not sure if intentional, but I love the wall-climbing Koopa , it's hilarious how much it cheats during the race. And the Star that jumps out of bounds at the end making it impossible to get lmao
Setup guide to play (it's free):
rentry.co/mb64-setup-guide