Reproduction steps:
1. Open the attached “IN-107889.zip” project
2. Open the “Playground” Scene
3. Open the Test Runner Window (Window > General > Test Runner)
4. Click on the Playmode tab
5. Click “Run All”
6. Observe the test results

Expected result: Both tests run successfully
Actual result: “TestOneSuccess” test runs successfully, and “TestOneSuccessAgain” (same test as first) test fails

Reproducible with: 1.9.0, 1.14.1 (6000.0.54f1, 6000.1.12f1, 6000.2.0b10, 6000.3.0a3)

Reproducible on: Windows 10 (user reported), Windows 11
Not reproducible on: No other environment tested

Notes:
- Tests do not fail when run one by one, but Input actions become null in subsequent tests
- Removing InputTestFixture.TearDown() makes consecutive tests pass
- Issue persists even with DestroyImmediate() instead of Destroy()
- Cleaning all GameObjects in the Scene also does not help