Activating AnimationTree under certain conditions causes editor to freeze forever

[thomdionqwe]

Godot version

v4.1.stable.official [9704596]

System information

Godot v4.1.stable - Windows 10.0.19045 - Vulkan (Compatibility) - AMD Radeon(TM) Graphics (Advanced Micro Devices, Inc.; 31.0.14057.5006) - AMD Ryzen 5 5600G with Radeon Graphics (12 Threads)

Issue description

A specific AnimationNodeStateMachine layout freezes the editor under certain conditions (Seems fine when parented to a Node2D). I've tried waiting for it to unfreeze for a few minutes with no improvement.

Steps to reproduce

Activate the scene tree in the minimal reproduction project to freeze the editor. The contents of each animation does not matter.

Minimal reproduction project

Minimal reproduction project

[kyle-wannacott]

I am encountering this issue as well while using AnimationNodeStateMachine. It completely crashes Godot.
Specs: Godot v4.1.stable from steam with Pop_os! 22.04 LTS and 5900x CPU and 6800xt GPU)

This might be the same, or related issue: #79172

Can reproduce on mobile, forward+ and compatibility.

It seems to happen for me when I link backwards in the AnimationTree (its fine if not linking backwards; I'm learning animationTree, So I don't know what is typical/idiomatic workflow when using AnimationTree...):

[akien-mga]

• Duplicate of Crash when setting AnimationTree active with circular dependency (infinite loop) #79012.