[Version 9 - The City of Mystery]

You are not stuck in GDC, there is a teleporter at the train station.

[Item Guide - V13: Vague Clarity (Old)]

What is this "Glitched item" (at Forlorned Cavern and Route 4?). I can't get them because they are at unreachable places?

 

(maybe that's why they are "Glitched items"...)

[V9 - Bug Reporting Thread]

So I'm not sure this is a bug but I wanna post this anyway because it is, it can screw the player pretty much over.

 

So I needed to face Zetta the first time. I lost against him and the game jumped me back to the Gearen Laboratory even though I used the healing point(s) a dozen of times at the Goldenwood Forest (and at the picnic place). I found that weird so I refrained myself from saving the game and went back to the Goldenwood Forest. There were no signs of Team Xen or Zetta or even Melia. And I pretty much searched through every possible place I could reach. 

 

Obligatory question though I suspect the answer: is this intended?

 

I did not dare to investigate more mainly because quick saving is an automatic response of mine in this game (and Reborn), and I was afraid I was gonna save the game and possibly stuck in the game forever. So I did a soft-reset and beat Zetta...

 

But I suspect this is not how the game is intended, and you are actually unable to continue the plot whatsoever.