The Tomcat server logs the following warning on the server terminal while accessing pages from the browser after upgrading Tomcat from 8.0.5 to 8.0.9.0.
MonitorF
It's a known NB bug when using HttpMonitor for debugging:
https://netbeans.org/bugzilla/show_bug.cgi?id=204775
HttpMonitor will work but it is going to skip some parts of a request if they are processed before by spring (like spring security chain)
You can try to give Spring Security filter an extremely high order and wish it works, which I doubt.