I was playing SMS through the 3D All Stars collection when something strange happened. I launched episode 6 of Sirena Beach (the « cleaning the beach » one), and, you know, I’m playing this game since I’m 5, so I knew something was wrong when the timer stopped. Because the beach wasn’t totally cleaned at all.

(on this screen, the timer was stopped just few seconds ago, and as you can see, there's much "ink" left on the beach)

The first time, i was quite mindfucked, because in 18 years I didn’t saw something like that. Something like 20% of the beach wasn‘t clean, and after a little thought I’ve been thinking about the speedrun community, since I am a huge fan of speedrunning in general (and also I’m trying speedrunning various games for my personnal pleasure). So I tried to redo it, and i finally succeed by trying to recreate the conditions of the first time (same path, same actions).

(red line is my path, blue cross are the nokis YOU HAVE to clean)

I don’t know if this glitch is known, I didn’t find anything about it. I don’t know if it could be useful for speedruns either. But it saved me a few seconds.