Oddity in level 4-17

SPOILER ALERT: this post contains a solution to 4-17.

There’s only one way to do level 4-17 in 3 moves (the recommended number), so those of you as obsessive as I am will have found it:

1.c11 2.g9 3.c5

But instead of pressing on to level 4-18, let’s stop a second and watch what’s going on during move 2. After 2.g9 the teardrop drops onto a Dizzy, and the effect is quite strange, because the Dizzy simultaneously grabs and vanishes. Furthermore, it grabs another Dizzy, the one on h1, and this Dizzy manages to warp a Rick from e1 to d1 before grabbing it. This warping is very much like the race condition in level 3-21, but this time (at least on my phone) it seems to happen every time, whereas on 3-21 one really has to persevere to see the effect.