A DESCRIPTION OF THE PROBLEM :
Since the java version 8 update 311, we are unable to run our webstart application.

We are receiving the following exception for signed jars - "java.security.cert.CertificateException: Found unsigned entry in resource"

We have confirmed that our jars are being signed correctly, this only started in 1.8.311

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Download and open our application https://app.quotemedia.com/qs/client/4x/qs.jnlp

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Application should start and display the login window.
ACTUAL -
Application blocked for security window is shown with the following message:

Failed to validate certificate. The application will not be executed.

CUSTOMER SUBMITTED WORKAROUND :
Downgrade to version 1.8.291

FREQUENCY : always