It seems that space players can notice when the frog is missing something - after all they can somehow breed it and Kanaya said as such - that they didn't collect all the parts of code. So it might be possible for a space player who also, like Kan, never saw the final frog to notice that they should find it. And unlike our kids, this player won't be restrained by need to complete LE's ultimate loop or get doomed otherwise.

I mean, Karkat also notices there’s something wrong with the Frog, but at that point they’re so tired and ready to be done with the game that they just push through either way. And looksie, the result was accidentally making a murderdog.