Reproduction steps:
1. Open the attached “Hopeful Dumpster Fire.zip” project
2. Open the “Assets/Scenes/SampleScene.unity” Scene
3. Select the “TestScript” GameObject in the Hierarchy window
4. Open the “DamageSettings” field in the Inspector window
5. Change the “Value” field value to 50
6. Observe "On Property modified" being logged in the Console window
7. Enable "Put Value In Label" by clicking on the checkbox
8. Change the “Value” field value to 60
9. Observe the Console window

Expected result: "On Property modified" message is logged
Actual result: No message is logged

Reproducible with: 6000.0.29f1, 6000.1.0a7
Couldn't test with: 2021.3.46f1 (Could not resolve compilation errors), 2022.3.52f1 (NullReferenceException when enabling "Put Value In Label")

Reproducible on: Windows 11
Not reproducible on: No other environment tested