[1.8] Item Frame maps disappearing

Hi.
I'm using Frame Picture to draw a image in Item Frames, but when I Right Click the frame, it disappears. But if I go far away and come back, the frames are back.

I'm using this events to try to cancel:

Code:

@EventHandler(priority = EventPriority.HIGH)
    public void onHangingBreak(HangingBreakEvent e) {
        if (e.getEntity() instanceof ItemFrame) {
            e.setCancelled(true);
        }
    }

    @EventHandler
    public void onPlayerInteractEntity(PlayerInteractEntityEvent event) {
        if (!event.isCancelled() && event.getRightClicked() instanceof ItemFrame && !((ItemFrame) event.getRightClicked()).getItem().getType().equals(Material.AIR)) {
            event.setCancelled(true);
        }
    }

Normal itens aren't removed from ItemFrame, but the FramePicture maps (I think it is made with maps) disappears when I Right Click.