Steps to reproduce:
1. Open the attached “IN-150921” project
2. Enter Play mode
3. Exit Play mode
4. Observe the Console
Actual result: Console output will now result in "_flag: True, _list.Count: 1", and so on and so forth across subsequent Play mode sessions
Expected result: Console output continues to output "_flag: False, _list.Count: 0"
Reproducible with: 6000.5.9f1, 6000.6.0a1, 6000.6.0b9, 6000.7.0a5
Could not test with: 6000.0.82f1 (AutoStaticsCleanupAttribute' could not be found), 6000.3.22f1, 6000.5.0a7 (AutoStaticsCleanupAttribute' is inaccessible due to its protection level)
Reproducible on: MacOS 26.5 (M1)
Not reproducible on: No other environments tested