Duplicate input events on TabContainer _gui_input() and _input()

[spoutnickgp]

Tested versions

• Reproducile in: v4.2.2.stable.official [15073af]

System information

Godot v4.2.2.stable - Windows 10.0.19045 - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 3090 Ti (NVIDIA; 31.0.15.4629) - Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz (16 Threads)

Issue description

There seems to be an issue with the TabContainer specifically:
all mouse clic input events are duplicated when calling _gui_input, and are sent twice as two separate events:

• one with local coordinates of the control in the _gui_input method, as expected
• the other one with global coordinates, caught afterwards by another node in its _input() method

This happens even with the mouse filter set to stop, and even when using accept_event() explicitly (which should not be required anyway if I understand correctly).

Steps to reproduce

• Setup a project with a "select" input action bound to left mouse button
• Have a Sprite Node with the following script:

func _input(event: InputEvent):
	if event.is_action_pressed("select"):
		print(event)

• Have a canvas layer node, with a child tab container, and a TextureRect control
• Have the following script attached to the TextureRect control

extends TextureRect

func _gui_input(event: InputEvent):
	if event.is_action_pressed("select"):
		print(event)

This gives the following layout:

• Set the node mouse filter to STOP

• Click on the Background node: the function _input is called with an input event as expected
• Click on the texture rect: the function _gui_input is called, as expected, but the the function _input is also called from the Sprite Node with a different input event matching the first one except the coordinates are translated.

The behavior is the same with _unhandled_input() and event with explicity acquitance of the input event with accept_event() (which is logical if these are two separate events).

Expected behavior:

• Only one event is sent in the child of the TabContainer's _gui_input method, with no duplicates.
• This "proper" behavior is seen in all other tested container nodes, only the TabContainer seems at fault.

Minimal reproduction project (MRP)

godot-tab-input-bug.zip