Uh, basically what the title said. My inventory turned up empty when I returned to the pocket dimension after going through a wizardland ('kynuskolgorarp' was the code). If I had my inventory window open prior to exiting the window would close (that may be expected behaviour though?) and then when I reopened everything would be gone. Also I did die and reload while in the dimension I don't know if that would effect anything. Also the game froze up if I tried to leave the pocket dimension, though I assume this is just more symptoms of the same bug.
Having this same problem, this save is inside the wizardlands, after i pulled the level and killed the clones. (the cube didn't open up, not sure if this is a bug or what's supposed to happen with that?) If you exit via the portal, the inventory is empty in the pocket dimension, and then if you attempt to exit the pocket dimension, the game will crash without an error.