This is probably intentional, as otherwise it is possible to get oneself into an unwinnable situation several hours into the game. Supposing that the Zolom works as "it should", if a player made the unfortunate mistake of saving on their only save slot right next to Zolom, it's very likely game over, since the Zolom is quite powerful when first encountered. Furthermore, saving the Zolom's location would bloat the save files (especially since it is an extended object, and not just a point) - but, in its current state, the game probably spawns the Zolom at a random location far from the place the characters spawn.