Godot v4.2.1.stable - Windows 10.0.22631 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1660 Ti (NVIDIA; 31.0.15.3699) - AMD Ryzen 7 4800H with Radeon Graphics (16 Threads)
Issue description
If you connect the finished signal of a one-shot GPUParticles2D to its queue_free function and the system is the root of the scene, triggering emit on the system in the editor will cause it to crash.
Steps to reproduce
Create a new scene, make GPUParticles2D into its root.
Disable emitting, set the system to one shot, add a process material.
Via the signals panel on the GPUParticles2D node, connect the finished signal to queue_free
Toggle the emitting checkbox on the particle system.
Wait one second for the system to finish emitting.
tivec
commented
9 months ago 
Griiimon
Tested versions
v4.2.1.stable.official [b09f793f5]
System information
Godot v4.2.1.stable - Windows 10.0.22631 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1660 Ti (NVIDIA; 31.0.15.3699) - AMD Ryzen 7 4800H with Radeon Graphics (16 Threads)
Issue description
If you connect the
finishedsignal of a one-shotGPUParticles2Dto itsqueue_freefunction and the system is the root of the scene, triggering emit on the system in the editor will cause it to crash.Steps to reproduce
finishedsignal toqueue_freeemittingcheckbox on the particle system.Minimal reproduction project (MRP)
MRP-ParticleCrash.zip