FULL PRODUCT VERSION :
Java(TM) SE Runtime Environment (build 1.8.0_40-b26)
Java HotSpot(TM) Client VM (build 25.40-b25, mixed mode)


ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 6.1.7601]


EXTRA RELEVANT SYSTEM CONFIGURATION :
I use the IntelliJ debugger:
IntelliJ IDEA 14.1
Build #IC 141.177, built on March 23, 2015

A DESCRIPTION OF THE PROBLEM :
I set the deployment.properties to include ...
deployment.javaws.jre.0.args=-Dcertify.port\=15407 -agentlib\:jdwp\=transport\=dt_socket,server\=y,suspend\=n,address\=10481

I connect on port 10481 with the IntelliJ debugger. If I stop at a breakpoint and continue all works well. If I take a step or two through my code the applet dies and the debugger disconnects.

REGRESSION. Last worked in version 6u43

ADDITIONAL REGRESSION INFORMATION:
I really don't know if this ever worked, though I think it did when I tried it many years ago with another debugger and maybe Java 1.4.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Connect to an applet with a debugge with a breakpoint set on any line of code that you know will be executed. When you hit the breakpoint step from line to line. The bug will occur within a step or two.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
One should be able to step through code as one does in an application.
ACTUAL -
The applet crashes and the debugger disconnects.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
I've seen no error message.

REPRODUCIBILITY :
This bug can be reproduced always.

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Any applet should work but if you need the one I use please send me an email at glystad@worksoft.com and I'll send the source. You'll have to sign it yourself, etc.
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