The ticket is closed because the engineer found the bug report unconvincing, and needed more information.
It is closed as "incomplete", which according to https://wiki.openjdk.java.net/display/HotSpot/Bug+Triage means
> If the issue is incomplete, add a comment noting what is needed and close the bug as 'Resolved' - 'Incomplete'. This is our way of saying "need more information".
This is the text from the actual bug report:
> Looks like issue with provided demo app. [...] Please provide more complete example with command line used by jpackage, verbose output of jpackage and output of error message when resulting app is run from terminal.