Still unable to reproduce this I am afraid...

Here is what I did:

• Download and prepare Tomcat 8
• Take some WAR with Weld enabled functionality and added the beans you mentioned in steps to reproducer
  • I took weld-numberguess example
  • Added those beans and made them used in the app
• Signed the resulting war with a self-signed certificate
  • Did something similar to what is described in this article
• copy signed WAR to Tomcat folder and start the server
• Test the app - it all works with no errors

Is any of the steps I took wrong compared to what you did?
I might need more info on this as so far I cannot see the problem. Would you mind trying something similar to what I did?