The value of "arrayElements" which is a field of "OldObjectSample" of JFR event is different from the description.

The description attribute of "arrayElements" is below.
"If the object is an array, the number of elements, or -1 if it is not an array"
https://github.com/openjdk/jdk/blob/a9d21c61fb12a11e18c6bb8aa903e5a8e42473f1/src/hotspot/share/jfr/metadata/metadata.xml#L743
This description is returned by ValueDescriptor.getDescription().

But actually, if the object is not an array, "arrayElements" is -2147483648, or INT_MIN.

RecordedEvent.toString() outputs N/A if the field value is INT_MIN.

jdk.OldObjectSample {
  startTime = 10:42:35.890 (2023-07-19)
  allocationTime = 10:42:35.872 (2023-07-19)
  objectSize = 24 bytes
  objectAge = 18.1 ms
  lastKnownHeapUsage = 512.0 kB
  object = [
    java.lang.String
  ]
  arrayElements = N/A
  root = N/A
  eventThread = "main" (javaThreadId = 1)
}

However, RecordedEvent.getValue("arrayElements") outputs -2147483648. Also, "arrayElements" is displayed as -2147483648 on the JMC browser.
This result is different from the description of OldObjectSample.