Bug or not?

[Squall of SeeD]

Future's right about being able to fly the Ragnarok through the wall, wheras you can't walk through it. The game was probably programmed not to let anything but the Ragnarok through, so as to prevent possibly screwing up the story if someone found a way to get the Garden over there.

correct me if i'm wrong, but the only barriers i remember are the ones on the edge of the continent, and it's not like you could just waltz off the continent if they weren't there. i think they were intentionally left up by the programmers to remind you that Esthar is still sealed off from the rest of the world even though Squall and the others got through with no trouble. i can understand what SoSD is talking about though.

They go along the perimeter of the continent, yes, and while they most certainly were left up to remind the player of that, it is kind of odd that the player can fly through them with the Ragnarok, but not walk through them. That's why I think it's most likely that the Ragnarok was the only thing programmed to pass through, just in case the player found a way there somehow.