System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 1050 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 511.65

Blender Version
Broken: version: 3.1.0, branch: master, commit date: 2022-03-08 18:16, hash: rBc77597cd0e15
Worked: Blender 3.0.1 (official release).

Short description of error
When the Wireframe modifier is applied to a mesh, the result isn't the expecting result, instead, the result has no thickness and overlaping faces.

Exact steps for others to reproduce the error
To demosntrate the bug, I will use the Default Cube, but it happens with any mesh.
1 -Open Blender.
2 -Select the Default Cube.
3 -Add the Wireframe modifier to the Default Cube.
4 -Set the thickness value to 0.2 meters (this step is optional, but it helps visualize the bug; the bug will happen with any thickness value).
5- Apply the Wireframe modifier to the Default Cube.

Here is a print with the result (with face orientation enabled in the Viewport Overlays):

Thanks! Have a nice day =).