Clicking outside of a SubVieportContainer with activated rect_clip_content can trigger a gui event on a Container's descendant Control-Node

[Sauermann]

Godot version

v4.0.alpha.custom_build [3db1d68]

System information

Debian 11, Vulkan

Issue description

I setup a Control and a Camera2D within a SubViewport within a SubViewportContainer so that the Control is located only partially within the SubViewport.
SubViewportContainer:rect_clip_content is set to true.
mouse_focus and focus_mode are set so that all nodes receive input events.

When I click outside of the SubVieportContainer, but within the location of the Control, I receive a gui event on Control.
I would expect, that in this case I do not receive a gui event.

Tracking it down in the source code, it looks like SubViewportContainer is not handled correctly at this location:

godot/scene/main/viewport.cpp

Line 1386 in df17244

if (!c || !c->is_clipping_contents() || c->has_point(matrix.affine_inverse().xform(p_global))) {

Steps to reproduce

1. Load MRP
2. Click on the "ErrorClick" Label which lies outside of the SubViewportContainer
3. Console shows that the gui event is received by the "Sub B" Label

Minimal reproduction project

SubViewportClick.zip

[Sauermann]

Closing this, since it is a duplicate of #28833.