A DESCRIPTION OF THE PROBLEM :
A regression was introduced in JDK 15 of jpackage on Windows.
When building an EXE the file is now Read Only, while on JDK 14 it was Read Write.
The MSI built by jpackage is still Read Write.

REGRESSION : Last worked in version 14

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Read Write EXE built by jpackage
ACTUAL -
Read Only EXE built by jpackage

FREQUENCY : always