Exception thrown when testing proxy configuration

Hello,

When I try to test the proxy (in Manage Plugins page), after having configured a corporate proxy (which works because I manage to pull all plugins), for every website I test I get a "Caused by: java.lang.ClassCastException: java.lang.Long cannot be cast to java.lang.Integer" error.

Thank you much in advance for the fixing.

Excellent end of week to all of you.