Hello, I faced the same issue with "shared.loader" variable I rely on for an application after upgrading to Jessie.
>From my point of view, "server.loader" should also points to "catalina.base".
Expected values:
server.loader=${catalina.base}/server/classes,${catalina.base}/server/*.jar
shared.loader=${catalina.base}/shared/classes,${catalina.base}/shared/*.jar
Best regards,
--
Yves Martin

