To reproduce:
1. Open the project “BugTest”
2. Enter Play mode
3. Walk around and notice that the player animation is messed up
4. Exit Play mode
5. Select PlayerArmature in the Hierarchy → disable Rig Builder in the Inspector
6. Enter Play mode
7. Walk around and notice the correct walking animation

Expected result: The animation is correct when Rig Builder is enabled
Actual result: The animation is messed up when Rig Builder is enabled

Reproducible with: 1.2.0 (2022.2.0a12, 2022.2.0b3, 2023.1.0a4)
Not reproducible with: 1.0.3 (2020.3.38f1), 1.1.1 (2021.3.7f1, 2022.1.11f1), 1.2.0 (2022.2.0a11)

Reproduced on: macOS Monterey 12.4 (Intel)