How to reproduce:
1. Open the attached “IN-117113” project
2. Open the SampleScene
3. In the Hierarchy window, select the "R_Up_leg" GameObject (Walk -> Position -> Pelvis -> P_Pre_Up_Leg -> R_Up_leg)
4. In the Animation window, expand the Rotation parameter
5. Observe the change of the Rotation.z parameter

Expected result: The bone’s rotation animation curve remains consistent and has a smooth change
Actual result: The bone’s rotation animation curve makes sudden 360-degree flips

Reproducible with: 2023.1.0a1, 6000.0.58f1, 6000.2.6f1, 6000.3.0b3, 6000.4.0a1

Reproduced on: macOS 15.6 (M1)
Not reproduced on: No other environment tested

Note: It causes the rotation to flip from negative to positive values, such as -173 to 172, in a single frame