Unexpected "Body" returned from RigidBody2D.body_entered(body) signal with Rapier Physics

[paklong]

Describe the bug

When a RigidBody2D collides with a StaticBody2D, the body_entered(body) signal should provide the "body" as the StaticBody2D. However, using Rapier Physics, it incorrectly returns the RigidBody2D instead.

To Reproduce

1. Create the Wall:
   -Create a Node2D named "Wall".
   -Add a StaticBody2D as a child of "Wall".
   -Add a Sprite2D with the Wall image as a child of the StaticBody2D.
   -Add a CollisionPolygon2D from the Sprite2D toolbar as a child of the StaticBody2D.
   -Attach the following script to the StaticBody2D:

extends StaticBody2D

func _to_string() -> String:
    return "WallBody"

2. Create the Ball:
   -Create a Node2D named "Ball".
   -Add a RigidBody2D as a child of "Ball".
   -Enable Contact Monitor and set Max Contact Reported to 1.
   -Add a PhysicsMaterial to the RigidBody2D and set Bounce to 1.
   -Add a Sprite2D with the Ball image as a child of the RigidBody2D.
   -Add a CollisionPolygon2D with a CircleShape2D as a child of the RigidBody2D.
   -Attach the following script to "Ball":

extends Node2D
@onready var rigid_body_2d: RigidBody2D = $RigidBody2D

func _ready() -> void:
    rigid_body_2d.body_entered.connect(_on_body_entered)

func _on_body_entered(body):
    print ('Entered from node')
    print (str(body))

-Attach the following script to the RigidBody2D:

extends RigidBody2D

func _to_string() -> String:
    return "BallBody"

3. Create the Main Scene:

-Create a main scene.
-Add the "Wall" and position it near the bottom of the scene.
-Attach the following script to the main scene:

func _ready() -> void:
        var ball = preload("res://Ball.tscn").instantiate()
        ball.position = Vector2(551, 96)
        call_deferred("add_child", ball)

Expected behavior
Using GodotPhysics2D, when the "Ball" bounces off the "Wall", it prints:

Entered from node
WallBody

This is the expected behavior.
screen-recorder-fri-aug-02-2024-20-24-25.webm

However, when using Rapier Physics, when the "Ball" bounces off the "Wall", it prints:

Entered from node
BallBody

screen-recorder-fri-aug-02-2024-20-26-45.webm
This is incorrect. The body sent from _on_body_entered(body) should be "WallBody" instead of "BallBody".

Additionally, the last bounce did not trigger _on_body_entered(body).

Environment:
-OS: Microsoft Windows 10 Home
-Version: 10.0.19045 Build 19045
-Godot Version: 4.3rc2 (also tested on 4.2 and 4.3rc1 with the same result)

Example project(zip)
https://drive.google.com/file/d/15y4xSufl-TudEPx96C8o8-U5siQV_OMW/view?usp=sharing

[Ughuuu]

Can you instead upload the file directly on github? As it is now it's on google drive and i don't have access to it.

[Ughuuu]

Also, what version of the Rapier plugin are you using?

[paklong]

Can you instead upload the file directly on github? As it is now it's on google drive and i don't have access to it.

I can't upload here due to the zip size is larger than 25MB.
I've created a repo to reproduce the issue.
https://github.com/paklong/ball_bounce_rapier

Also, what version of the Rapier plugin are you using?

Rapier Physics - Cross Platform Determinism
Version: 0.7.23

[Ughuuu]

A solution would be to remove the addons folder as I can put that manually(in future). I have access to the repo, checking it.

[Ughuuu]

I have implemented a fix, will merge it soon