The take is that possibility space does not have the same constraints as physical space. But I cannot recall that that was a real problem, but at least that's an opener for a discussion.

The question was and still is what influences individual particles to form an interference pattern over time. One interpretation is that something changes, or interferes with, the probability wave function of the particle's 'virtual' trajectory. The empirical evidence for this statistical anomaly is the pattern on the screen. Well of course, the double slit causes the interference pattern, but it's still not clear why. Best working guesstimate so far is that it behaves like a bullet in physical space and like a wave in possibility space at the same time. This guesstimate was enough to become the foundation of modern quantum physics, and so much more. But is it the whole story? Do we want to know?

I think the double slit experiment is just flawed, and it's a miracle that someone was able to derive a working model from its results.