### Godot version

v4.2.dev4.mono.official [549fcce5f]

### System information

window10 64bit

### Issue description

![GIF 2023-9-1 22-39-07](https://github.com/godotengine/godot/assets/35988767/d7be4a45-f5f0-4408-8758-f4bf9f3c9c5d)


### Steps to reproduce

/

### Minimal reproduction project

/
list_hb->add_child(item_vb);
	item_vb->set_custom_minimum_size(Size2(320, 0) * EDSCALE);
	HBoxContainer *preview_hb = memnew(HBoxContainer);
	preview_hb->set_v_size_flags(Control::SIZE_EXPAND_FILL);
	item_vb->add_child(preview_hb);
	VBoxContainer *list_vb = memnew(VBoxContainer);
	list_vb->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	l = memnew(Label(TTR("Directories & Files:")));
	l->set_theme_type_variation("HeaderSmall");
	list_vb->add_child(l);
	preview_hb->add_child(list_vb);
	
	item_list = memnew(ItemList);
	item_list->set_v_size_flags(Control::SIZE_EXPAND_FILL);
	item_list->connect("item_clicked", callable_mp(this, &EditorFileDialog::_item_list_item_rmb_clicked));
	item_list->connect("empty_clicked", callable_mp(this, &EditorFileDialog::_item_list_empty_clicked));
	item_list->set_allow_rmb_select(true);
	list_vb->add_child(item_list);
	item_menu = memnew(PopupMenu);
	item_menu->connect("id_pressed", callable_mp(this, &EditorFileDialog::_item_menu_id_pressed));
	add_child(item_menu);
	
	preview_vb = memnew(VBoxContainer);
	preview_hb->add_child(preview_vb);
	CenterContainer *prev_cc = memnew(CenterContainer);
	preview_vb->add_margin_child(TTR("Preview:"), prev_cc);
	preview = memnew(TextureRect);
	prev_cc->add_child(preview);
	preview_vb->hide();
	file_box = memnew(HBoxContainer);