Terrain3D version

0.9.3a

System information

Godot v4.3.stable.mono - Windows 10.0.26100 - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 4070 Ti SUPER (NVIDIA; 32.0.15.6094) - AMD Ryzen 9 9900X 12-Core Processor (24 Threads)

Is the issue reproducable in the demo?

Yes

Issue description

When baking a navmesh on a Terrain3D node, the navmesh is generated much closer to certain edges of the painted navigable area than others. For instance, on the following navmesh generated from baking a single, completely flat, 64 x 64 terrain region with default settings, the top and left edges are much closer to the edge of the region than the bottom and right edges:

I'd expect a result closer to the following image with all of the edges of the navmesh being roughly equal distance from the edge of the terrain region:

This issue is also present inside the navigation demo:

It is also present within terrain regions and not just at the border between regions.

Logs

No response