InputEventMouseButton global_position becomes broken when window is resized

[MatrixDev]

Tested versions

• reproducable in v4.2.1.stable.official [b09f793]

System information

MacOS 14.1.1 - Vulkan API 1.2.231 - Forward+ - Apple M1 Max

Issue description

Following methods return "system" mouse position values:

• InputEventMouseButton.global_position (left, pressed)

While "scaled" mouse position values are returned by:

• InputEventMouseMotion.global_position
• CanvasItem.get_global_mouse_position

This happens only after resizing (or maximizing) a window.

Steps to reproduce

Display -> Window -> Stretch:

• Mode = canvas_item
• Aspect = expand

Scene with a control node. Override _gui_input method and log InputEventMouseMotion and InputEventMouseButton events together with get_global_mouse_position result.

Before resizing a window (InputEventMouseButtonB is the same as others):

InputEventMouseButtonA -> (508, 890)
InputEventMouseButtonB -> (508, 889)
InputEventMouseMotion -> (508, 889)
InputEventMouseMotion -> (508, 888)
InputEventMouseMotion -> (508, 887)
InputEventMouseMotion -> (508, 886)
InputEventMouseMotion -> (508, 885)
InputEventMouseMotion -> (508, 884)

After resizing a window (InputEventMouseButtonB is ~2x larger than others):

InputEventMouseButtonA -> (510.00003, 951.5881)
InputEventMouseButtonB -> (918, 1712)
InputEventMouseMotion -> (510.00003, 950.47766)
InputEventMouseMotion -> (510.00003, 949.9225)
InputEventMouseMotion -> (510.00003, 949.3673)
InputEventMouseMotion -> (510.00003, 948.81213)
InputEventMouseMotion -> (510.00003, 948.25696)
InputEventMouseMotion -> (510.00003, 947.7017)

Where:

• InputEventMouseButtonA - CanvasItem.get_global_mouse_position
• InputEventMouseButtonB - InputEventMouseButton.global_position (left, pressed)
• InputEventMouseMotion - InputEventMouseMotion.global_position

Minimal reproduction project (MRP)

[gd_scene load_steps=2 format=3 uid="uid://b6r6gvimt6r0p"]

[sub_resource type="GDScript" id="GDScript_gjswp"]
script/source = "extends Control

var pressed = false

func _gui_input(event):
	if event is InputEventMouseButton:
		pressed = event.is_pressed()
		
		if pressed:
			print(\"InputEventMouseButtonA -> \", get_global_mouse_position())
			print(\"InputEventMouseButtonB -> \", event.global_position)

	if event is InputEventMouseMotion && pressed:
		print(\"InputEventMouseMotion -> \", event.global_position)
"

[node name="Control" type="Control"]
layout_mode = 3
anchors_preset = 15
anchor_right = 1.0
anchor_bottom = 1.0
grow_horizontal = 2
grow_vertical = 2
script = SubResource("GDScript_gjswp")

[AThousandShips]

Please upload a project, to help with testing this and identifying the exact problem

• A small Godot project which reproduces the issue, with no unnecessary files included. Be sure to not include the .godot folder in the archive (but keep project.godot).
• Having an MRP is very important for contributors to be able to reproduce the bug in the same way that you are experiencing it. When testing a potential fix for the issue, contributors will use the MRP to validate that the fix is working as intended.
• Drag and drop a ZIP archive to upload it (max 10 MB). Do not select another field until the project is done uploading.
• Note for C# users: If your issue is not C#-specific, please upload a minimal reproduction project written in GDScript. This will make it easier for contributors to reproduce the issue locally as not everyone has a .NET setup available.

[MatrixDev]

@AThousandShips, sure, no problem.
Bug88460.zip

[kleonc]

Happens since... v4.0.beta13.official [caacade]. Hence likely a regression from #69598. cc @Sauermann