The issue is found with jdk9 promotion build b80. To reproduce:
1. Install mentioned build from http://jre.us.oracle.com//java/re/jdk/9/promoted/ea/b80/bundles/
2. In JCP add http://sqeweb.us.oracle.com into ESL and enable trace.
3. try to launch applet
http://sqeweb.us.oracle.com/net/scanas415/export/deployment/larry/deploytoolkit/html/testDTBufferOverFlow.html
4. If below messge can be found from the trace the issue is reproduced:
installJRE TypeError: toolKit.installJRE is not a function
5. The applet tried to call toolKit.installJRE() method through live connect which failed. The source can be found from:
 http://sqeweb.us.oracle.com/net/scanas415/export/deployment/larry/deploytoolkit/

Affected tests:
RULE DeploytoolkitTest::testDTBufferOverFlow any any
RULE DeploytoolkitTest::testDTCheckisWebStartInstalled any any
RULE DeploytoolkitTest::testDTLaunchjnlpArg any any
RULE DeploytoolkitTest::testDTRunAppletCodebaseLookUp any any
RULE DeploytoolkitTest::testDTRunAppletJNLP any any
RULE DeploytoolkitTest::testDTRunAppletMinVer any any
RULE DeploytoolkitTest::testDTRunAppletNoCode any any
RULE DeploytoolkitTest::testDTRunAppletNoMinVer any any
RULE DeploytoolkitTest::testDTisAutoUpdateEnabled any any
RULE DeploytoolkitTest::testDTisPlugin2 any any
RULE DeploytoolkitTest::testDTisWebStartInstalled any any
RULE DeploytoolkitTest::testDTjvmHomeProperty any any
RULE DeploytoolkitTest::testDTversionCheck any any
RULE DeploytoolkitTest::testDTversionCheckWildCard any any
RULE DeploytoolkitTest::testGetPluginVersion any any
RULE DeploytoolkitTest::testIsPluginInstalled any any