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Perhaps because I watched Subaru's, Youtube suggested me a stream of Igarashi Rika playing Portal, and she has exactly the same issue with early chambers Shuba did. They both seem to have some strange mental model of how portals work, expecting that placing blue portal on different walls will change the exit point. It also took a puzzle deliberately made for the very purpose to realize there is no difference between entering orange and blue portal.
If I remember correctly, both Marine and Sakamata realized that portals are interconnected pretty much instantly, while these two were initially expecting teleport-like mechanics. Makes me wonder if there are mainstream games featuring teleportation they could have played before.