When checking live object's references, references into Free regions may not be detected as invalid.

Depending on JDK version and debug level some additional asserts may fire. This will stop the VM (make verification "fail") but not necessarily as intended for verification with expected output (these additional failures in earlier JVMs like <=17 were only found through code inspection and may be wrong; for newer VMs the code is the same).

Seems to be a day one issue.