It appears when a player leaves a section to another, he appears stuck in the section he left.
But it's just visible for the players that are there at the moment. This was reported by several players.
The screenshots show players that just left Groddle Forest and appeared stuck. Going to those players profile you can see they're not actually there. I left Groddle Forest and came back in and the players were gone.
imgur.com/b3QI2.png
imgur.com/0buH1.png
imgur.com/ZcImc.png
Ubuntu 10, Firefox 3.6.3
// alpha.glitch.com/forum/bugs... already address this -- sorry