How to reproduce:
1. Open the “Unity_Question_Baking_Artifacts.zip“ project
2. Open the “Unity_Question_Baking_Artifacts_Scene“ Scene
3. Open the Window > Rendering > Lighting window
4. Press on “Generate Lighting“
5. Observe the Scene view

Expected result: Seamless lighting and shadows on the ground and walls
Actual result: Various baking artifacts on the ground and walls

Reproducible in: 2023.1.0a1, 6000.0.57f1, 6000.2.4f1, 6000.3.0b1

Reproduced on: Windows 11 Pro (24H2)
Not reproduced on: No other environment tested

Note: In 2023.1.0a1, the artifacts look more blocky than in the pictures; however, there are still artifacts