Fern's FAULT.

src/main/java/com/onarandombox/MultiverseCore/listeners/MVPlayerListener.java

@@ -157,7 +157,9 @@ public class MVPlayerListener extends PlayerListener {
         // Only check payments if it's a different world:
         if (!event.getTo().getWorld().equals(event.getFrom().getWorld())) {
             // Handle the Players GameMode setting for the new world.
+            if (this.plugin.getConfig().getBoolean("enforcegamemodes", true)) {
                 this.handleGameMode(event.getPlayer(), toWorld);
+            }
 
             // If the player does not have to pay, return now.
             if (toWorld.isExempt(event.getPlayer())) {