Inconsistent Behaviour & Area2D nodes not triggering collision sometimes when spawned inside a valid area

[DenysAshikhin]

Describe the bug

When running with the rapier physics, once the units move inside the center box, sometimes the bullets they spawn do not trigger a collision and continue on moving.

However, with godot normal physics this doesn't happen

To Reproduce

Steps to reproduce the behavior:

Run the project, (default it is with built-in godot physics). And see it work correctly.
Run the project with rapier and see bullets fly out.

NOTE
If performance is too low, you can adjust number of units from 400 to desired number in main_scene.gd:76

Expected behavior

A clear and concise description of what you expected to happen.

Environment:

• OS: Win11
• Version: [e.g. latest or v0.x]
• Godot Version: 4.3
• Type: Area2D collisions?

Example project(zip)

Please attach a zip with project where issue occurs. Remove the addons folder so that the size is less than 25 mb.
mrp_rapier.zip