GUI will become invalid if it is opened in a CloseHandler.

[YKDZ]

I tried to open another GUI after closing one GUI, but got the following result:

Here is the code I used for testing:

private static CommandAPICommand getTestCommand() {
        return new CommandAPICommand("test")
                .executes((sender, args) -> {
                    Player player = (Player) sender;
                    Window window1 = Window.single()
                            .setGui(Gui.normal()
                                    .setStructure(
                                            "# # # # # # # # #",
                                            "# . . . . . . . #",
                                            "# . . . . . . . #",
                                            "# # # # # # # # #")
                                    .addIngredient('#', new SimpleItem(new ItemBuilder(Material.BLACK_STAINED_GLASS_PANE)))
                                    .build())
                            .addCloseHandler(() -> {
                                Window window2 = Window.single()
                                        .setGui(Gui.normal()
                                                .setStructure(
                                                        "# # # # # # # # #",
                                                        "# . . . . . . . #",
                                                        "# . . . . . . . #",
                                                        "# # # # # # # # #")
                                                .addIngredient('#', new SimpleItem(new ItemBuilder(Material.RED_STAINED_GLASS_PANE)))
                                                .build())
                                        .build(player);
                                window2.open();
                            })
                            .build(player);
                    window1.open();
                });
    }

What should I do to make it work properly?
My InvUI version is 1.33.

[NichtStudioCode]

Spigot does not fire click events for inventories that were opened during InventoryCloseEvent. A workaround would be to use the Bukkit scheduler to open the new window a tick later.