gui_in_3d not usable when tree is paused

[makepanic]

Which demo project is affected:
gui_in_3d

OS/device including version:
Linux / 3.2.1.stable.official

Issue description:

• If the tree is paused, a CollisionObject will not emit mouse_entered and mouse_exited signals.
• this causes the demo to never set is_mouse_inside and in turn breaking the input relaying

Screenshots of issue:
https://streamable.com/ini8fw

I found this when implementing a pause screen for a godot VR project.
I'm unsure if this is an expected limitation of the implementation or if there's a better alternative that could be used to make GUI work in VR (3d).

I've created #39094 in the godotengine repo which duplicated #38370.

If this is a bug in the engine, this issue can probably be closed.

[aaronfranke]

Unfortunately, the pause system in Godot is fairly limited. I recently opened a proposal to redesign the pause system, which will allow you to pause only parts of the scene tree, so you can pause specific trees of nodes in your game without pausing the GUI system.

Also, if you are working on a pause screen for VR, check out GUI in VR.

[voylin]

@aaronfranke Those bug report were solved and closed. I'm looking at which issues I can handle but I guess there already is a demo project for this if I'm correct.
https://github.com/godotengine/godot-demo-projects/tree/master/misc/pause

[aaronfranke]

Fixed by #714 for Godot 4.0. Thanks for the bug report!