CharacterBody3D randomly teleports around when moving near the scene origin

[jacobcoughenour]

Godot version

4.1.dev (70f69f6 to ffd32a2)

System information

Windows 11, Intel Core i9-12900K, Forward+, NVIDIA GeForce RTX 2080 SUPER driver v31.0.15.2849

Issue description

When I move the CharacterBody3D with move_and_slide() close to 0,0,0 it sometimes teleports the character. It appears to be teleporting the character to ~25.574m from the origin along the X or Z axis (ex: (0, y, ~25.574) or (~25.574, y ,0)).

Recording.2023-05-13.234934.-.Trim.mp4

(Note: the white cube in the center does not have a collider)

I narrowed it down to PR #76379 introducing this bug since the commit right before it does not exhibit this behavior.

Steps to reproduce

See player.gd in the reproduction project. The gist is I get the input and add it to the velocity with some gravity then call move_and_slide().

The controls are WASD and click the window to cursor lock and rotate left/right.

Minimal reproduction project

repro.zip

[rburing]

With Visible Collision Shapes enabled (in the Debug menu) we see that this happens on a seam of a trimesh shape.

The linked PR did change some thresholds (which could be changed back while still keeping the spirit of the PR), but I did not expect this effect. It may be that the changed threshold uncovered some other collision solver bug; this should be investigated further.

[jcostello]

I was experimenting this issue. Good catch