Reproduction steps:

1. Open the attached project “AnimateArticulationDrive.zip“
2. Open the “SampleScene“
3. Enter Game Mode
4. Observe the result

Expected result: Bottom “Cube (1)” GameObject has moved upwards
Actual result: The “Cube (1)“ stays at the original position, the value “Target” is changed as expected

Reproducible in: 2023.2.0a12, 6000.0.23f1
Not reproducible in: 2021.3.44f1, 2022.3.50f1, 2023.2.0a11

Reproducible on: MacOS 14.6.1 (M1 Pro), Windows 10
Not reproducible on: No other environments tested

Notes:

• Also reproducible in Player
• None of the “Articulation Body” component’s properties are animating as well, yet the values change as expected
• Notice that in the Cube (1) in the Articulation Body component value “Target“ reaches 5 (from default 0), however the “Cube (1)“ didn’t change its position
• If you try to change the “Target“ value a bit in any direction by mouse motion, the “Cube (1)” moves according to the expected result
• If you try to change the “Target” value by mouse motion, the target value isn’t changing. If moved abruptly that way, the “Cube (1)” can move higher or lower than the “Target” value
• Manually setting the “Target“ value makes the “Cube (1)“ to move as expected