The jenkins findbugs plugin draws a graph with red and yellow on it for high and low priority issues.
Clicking on this report takes me to the findbugs report.
This link seems to use an absolute, not a relative URI.
If the jenkins server is multihomed, or accessed over a socks proxy, or by any other means other than simple network access, the link does not work because the "one and only" server name is not resolvable from that client.
Editing the browser URL appropriately to point to the client-accessible name of the jenkins server provides access to the report. Navigating within the report also works just fine.
Most other links in jenkins use relative links, and so work fine. Please can this one use a relative link too.