Unexpected SSV warning appears on Linux for FX applet requesting JRE 1.7+

Testsuite name:FXDTManualTest
Test name(s):FXDTManualTestScenarios/Install_fx2.2_java1.7p_java1.6Installed.html
Product(s) tested:Jre8u40b07-32bit
OS/architecture:OEL6.4-RedHat-x86

Copy JDF workspace, install test jre, and run this case
Component: javafx deployment
Steps:( this test case is from new_framework/javafx/manual/FXDTManualTest/testcases/FXDTManualTestScenarios/Install_fx2.2_java1.7p_java1.6Installed.html)

Test Procedure:
1.Install the test JRE
2.Add http://localhost:8080/ to the Exception Site List in Java Control Panel->Security
3.Configure the test browser to use the test JRE java plug-in
4.Use the test browser to launch the applet which has “ javafx: 2.2“ and “jvm: 1.7+” in it.
http://localhost:8080/FXDTManualTest/html/Install_fx2.2_java1.7+.html
5.Accept to run from the security dialog
6.The applet should get loaded successfully using the test JRE

The actual result:
At step 6,there's a SSV dialog shown up after clicking "Run" on the security dialog .Please refer to attachment.jpg.
Is it a bug or case issue?If it is an case issue,please update this case instruction for linux.