src/de/steamwar/lobby/listener/PlayerMoveListener.java

@@ -41,6 +41,10 @@ public class PlayerMoveListener implements Listener {
             event.getPlayer().teleport(spawnLocation);
             return;
         }
+        if (event.getFrom().toVector().isInAABB(borderMinVector, borderMaxVector)) {
+            event.getPlayer().teleport(spawnLocation);
+            return;
+        }
         if (!to.toVector().isInAABB(borderMinVector, borderMaxVector)) {
             event.getPlayer().teleport(event.getFrom());
         }