The problem happens when trying to launch a fork jigsaw vm through ant.

The tested java class is a simple Helloworld.java used to read system property and jvm arg:
=============
public static void main(String[] args){
System.out.println(System.getProperty("jvmarg")) ;
System.out.println(System.getProperty("sysprop")) ;
}
=============

Then try to run it through ant. The build.xml looks as below. JAVA_HOME is pointed to one jigsaw jdk.
It works well in legacy mode:
=============
<project name="tests" default="test" basedir="." >
<target name="javac">
<javac
        srcdir="./src"
        destdir="./classes"
        includes="**/*.java">
</javac>
</target>

<target name="test" depends="javac">
<java fork="yes" classname="Helloworld">
   <env key="CLASSPATH" value="./classes" />
   <sysproperty key="sysprop" value="sysprop11" />
   <jvmarg line="-Djvmarg=jvmarg22" />
<!-- <jvmarg line="-L /net/sqenfs-1/export1/comp/jsn/users/patrick/xml_jigsaw/jigsaw/mlib -m test.hybrid"/> -->
</java>
</target>

</project>
==============

Then shift to hybird mode, here it means enable below line:
<jvmarg line="-L /net/sqenfs-1/export1/comp/jsn/users/patrick/xml_jigsaw/jigsaw/mlib -m test.hybrid"/>
It throws below exception:
==============
test:
     [java] Warning: CLASSPATH environment variable ignored when -m specified
     [java] Got exception: java.lang.ClassNotFoundException: -Dsysprop=sysprop11
     [java] java.lang.ClassNotFoundException: -Dsysprop=sysprop11
     [java] at java.net.URLClassLoader$1.run(URLClassLoader.java:359)
     [java] at java.net.URLClassLoader$1.run(URLClassLoader.java:348)
     [java] at java.security.AccessController.doPrivileged(Native Method)
     [java] at java.net.URLClassLoader.findClass(URLClassLoader.java:347)
     [java] at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
     [java] at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
     [java] at java.lang.Class.forName0(Native Method)
     [java] at java.lang.Class.forName(Class.java:264)
     [java] at helper.ModuleTestRunWrapper.main(ModuleTestRunWrapper.java:42)
     [java] Java Result: 1
==============


Notes:
It looks the issue is caused by <sysproperty> tag. When I remove it and only keep <jvmarg>, it works well.
==============
test:
     [java] Warning: CLASSPATH environment variable ignored when -m specified
     [java] jvmarg22
     [java] null

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