Metaobjects and PlayerPlaceItemEvent bug?

package bamse.rw;

import net.risingworld.api.Plugin;
import net.risingworld.api.definitions.Objects.ObjectInfoDefinition;
import net.risingworld.api.events.EventMethod;
import net.risingworld.api.events.Listener;
import net.risingworld.api.events.player.PlayerPickupItemEvent;
import net.risingworld.api.events.player.world.PlayerPlaceItemEvent;
import net.risingworld.api.objects.Item;
import net.risingworld.api.objects.MetaObject;
import net.risingworld.api.objects.Player;
import net.risingworld.api.objects.WorldItem;
import net.risingworld.api.objects.WorldItem.WorldItemType;
import net.risingworld.api.utils.Vector3f;


public class PermanentItemPlacement2 implements Listener {
    protected Plugin plugin=null;    // reference to plugin
    public PermanentItemPlacement2(Plugin testPlugin) {
        this.plugin=testPlugin;
    }

    @EventMethod
    public void onPlayerPlaceItem(PlayerPlaceItemEvent evt) {
        Player p=evt.getPlayer();
        Item item=evt.getInventoryItem();
        MetaObject station=evt.getMetaObject();
        if (station!=null) {
            // place a item in craft station
            ObjectInfoDefinition def= station.getObjectInfoDefinition();
            Vector3f pos=station.getWorldPosition();
            print("Player %s place a item %s into %s located at coordinate %.2f %.2f %.2f",p.getName(),item.getName(),def.name,pos.x,pos.y,pos.z);
            // Allow other to fill a owner craft station? Why not!
        } else {
            // place a permanent item
            Vector3f pos=evt.getPosition();
            print("Player %s place a persistent item %s at coordinates  %.2f %.2f %.2f",p.getName(),item.getName(),pos.x,pos.y,pos.z);
            // check condition and cancel if not owner or friend with build permissions
        }
        
    }
    
    @EventMethod
    public void onPlayerPickupEvent(PlayerPickupItemEvent evt) {
        Player p=evt.getPlayer();
        WorldItem item=evt.getItem();
        WorldItemType type = item.getWorldItemType();
        print("Player %s picked a WorldItem %s of type %s",p.getName(),item.getName(),type.name());
        
        if (item.isPersistent()) {        // type==WorldItemType.PersistentDynamic || type==WorldItemType.PersistentStatic
            // Player take a persistent placed item
            print("   Try to pickup a permanent item placed! Check permission and deny if not a friend with building right!");
            // here cancel event if player don't have right to take permanent item 
        } else if (item.isMetaObjectItem()) { // type==WorldItemType.MetaObject
            // Player take item got from crafting station (furnace,grill,oven,etc.)
            print("   Try to pickup a item from a craft station! Check permission and deny if not a owner or friend with inventory right!");
            MetaObject station = item.getRelatedMetaObject();
            if (station!=null) {
                // I have a craft station
                ObjectInfoDefinition def= station.getObjectInfoDefinition();
                Vector3f pos=station.getWorldPosition();
                print("   Item got from a %s placed at coordinate %.2f %.2f %.2f",def.name,pos.x,pos.y,pos.z);
            }
            // here cancel event if player don't have right to pickup items from crafting stations (furnace,grill,etc.) 
        } else if (type==WorldItemType.Default) {
            print("   Try to pickup a item from ground! It's safe to get dropped item to ground regarding ownership!");
            // player take a item dropped to ground ?
        } else {
            // Other 2 cases:
            //    WorldType==WorldItemType.Attached
            //    WorldType==WorldItemType.Static
            
            // here not sure from what source item come. need more research
            // probable need to cancel if player don't have right
        }
        
    }
    
    // Print to console
    public void print(String s) {
        System.out.println(s);
    }
    
    // Print to console a formated string with a list of arguments 
    public void print(String f, Object... args ) {
        if (f==null) {
            f="";
        }
        print(String.format(f, args));
    }
}

[Java] Player Bamse place a item ironore into furnace located at coordinate 1699.72 94.30 1788.76    <--- Here i placed a ore in furnace, but in furnace appear nothing
[Java] Player Bamse picked a WorldItem ironore of type MetaObject                                    <--- here i take a ore from furnace
[Java]    Try to pickup a item from a craft station! Check permission and deny if not a owner or friend with inventory right!
[Java]    Item got from a furnace placed at coordinate 1699.72 94.30 1788.76
Remove item ironore (2032444) from meta object 89067
SERVER: PLAYER Bamse (76561198869958751) PLACED ITEM steakburned @ (1698.98, 93.82, 1784.41)         <--- Here i placed a persistent item
[Java] Player Bamse place a persistent item steakburned at coordinates  1698.98 93.82 1784.41
[Java] Player Bamse picked a WorldItem steakburned of type PersistentStatic                          <--- Here i pickup a persistent item
[Java]    Try to pickup a permanent item placed! Check permission and deny if not a friend with building right!
[Java] Player Bamse picked a WorldItem breadhalf of type Default                                     <--  Here i pickup a dropped item on ground
[Java]    Try to pickup a item from ground! It's safe to get dropped item to ground regarding ownership!