TileMapLayer selection features broken when using Editable Children in instanced scene

[Snowlith]

Tested versions

Reproducible in: 4.3 beta1, 4.3 beta2

System information

Windows 11 - Godot v4.3 beta1, 4.3 beta2 - Vulkan (Forward+)

Issue description

When creating instances of a scene consisting of Node2Ds with the new TileMapLayer nodes as children with "Editable children" checked, the "Highlight Selected Layer" feature does not work, and the "Select next layer" and "Select previous layer" buttons crash the editor.

Correct behavior, the currently selected layer is highlighted (The TileMapLayers under "Layer manager 2" are local instances):

Bug (The selected layer is not highlighted despite "Highlight Selected Layer" being checked, and the two buttons circled crash the editor)

Steps to reproduce

• Create a 2D scene consisting of a Node2D with TileMapLayers as children
• Add this scene to another scene, and enable "Editable children" on the instanced scene
• Create a tileset and place tiles on the multiple TileMapLayers with "Highlight Selected Layer" checked (The tiles on the currently selected layer are not highlighted)
• Press the "Select next layer" and "Selected previous layer" buttons (Godot crashes)

Minimal reproduction project (MRP)

This MRP is for Godot 4.3 beta2
beta2-tile-test.zip

[KoBeWi]

Crash:

CrashHandlerException: Program crashed
Engine version: Godot Engine v4.3.beta.custom_build (222fa1c44de4de6bd81537a7b145db93d355f1c7)
Dumping the backtrace. Please include this when reporting the bug to the project developer.
[0] CowData<TileMapLayer *>::get (C:\godot_source\core\templates\cowdata.h:205)
[1] Vector<TileMapLayer *>::operator[] (C:\godot_source\core\templates\vector.h:97)
[2] TileMapLayerEditor::_layers_select_next_or_previous (C:\godot_source\editor\plugins\tiles\tile_map_layer_editor.cpp:4122)
[3] TileMapLayerEditor::_select_next_layer_pressed (C:\godot_source\editor\plugins\tiles\tile_map_layer_editor.cpp:3719)
[4] call_with_variant_args_helper<TileMapLayerEditor> (C:\godot_source\core\variant\binder_common.h:309)
[5] call_with_variant_args<TileMapLayerEditor> (C:\godot_source\core\variant\binder_common.h:419)
[6] CallableCustomMethodPointer<TileMapLayerEditor>::call (C:\godot_source\core\object\callable_method_pointer.h:104)
[7] Callable::callp (C:\godot_source\core\variant\callable.cpp:58)
[8] Object::emit_signalp (C:\godot_source\core\object\object.cpp:1188)
[9] Node::emit_signalp (C:\godot_source\scene\main\node.cpp:3890)
[10] Object::emit_signal<> (C:\godot_source\core\object\object.h:936)
[11] BaseButton::_pressed (C:\godot_source\scene\gui\base_button.cpp:138)
[12] BaseButton::on_action_event (C:\godot_source\scene\gui\base_button.cpp:176)
[13] BaseButton::gui_input (C:\godot_source\scene\gui\base_button.cpp:69)
[14] Control::_call_gui_input (C:\godot_source\scene\gui\control.cpp:1829)
[15] Viewport::_gui_call_input (C:\godot_source\scene\main\viewport.cpp:1570)
[16] Viewport::_gui_input_event (C:\godot_source\scene\main\viewport.cpp:1836)
[17] Viewport::push_input (C:\godot_source\scene\main\viewport.cpp:3259)
[18] Window::_window_input (C:\godot_source\scene\main\window.cpp:1692)
[19] call_with_variant_args_helper<Window,Ref<InputEvent> const &,0> (C:\godot_source\core\variant\binder_common.h:304)
[20] call_with_variant_args<Window,Ref<InputEvent> const &> (C:\godot_source\core\variant\binder_common.h:419)
[21] CallableCustomMethodPointer<Window,Ref<InputEvent> const &>::call (C:\godot_source\core\object\callable_method_pointer.h:104)
[22] Callable::callp (C:\godot_source\core\variant\callable.cpp:58)
[23] Callable::call<Ref<InputEvent> > (C:\godot_source\core\variant\variant.h:876)
[24] DisplayServerWindows::_dispatch_input_event (C:\godot_source\platform\windows\display_server_windows.cpp:3510)
[25] DisplayServerWindows::_dispatch_input_events (C:\godot_source\platform\windows\display_server_windows.cpp:3481)
[26] Input::_parse_input_event_impl (C:\godot_source\core\input\input.cpp:774)
[27] Input::flush_buffered_events (C:\godot_source\core\input\input.cpp:1053)
[28] DisplayServerWindows::process_events (C:\godot_source\platform\windows\display_server_windows.cpp:2978)
[29] OS_Windows::run (C:\godot_source\platform\windows\os_windows.cpp:1686)
[30] widechar_main (C:\godot_source\platform\windows\godot_windows.cpp:181)
[31] _main (C:\godot_source\platform\windows\godot_windows.cpp:206)
[32] main (C:\godot_source\platform\windows\godot_windows.cpp:220)
[33] WinMain (C:\godot_source\platform\windows\godot_windows.cpp:234)
[34] __scrt_common_main_seh (D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288)
[35] <couldn't map PC to fn name>
-- END OF BACKTRACE --