Defaulting to a newer maven-hpi-plugin, needed to make plugin development work out of the box.
Updated bundled ssh-credentials as otherwise bundled ssh-slaves does not work at all. (Irrelevant for Jenkins Enterprise which was already bundling a sufficiently new version.)
Manually uploaded plugins are incorrectly unpacked
IllegalStateException from MavenProject.getParent can break MavenFingerprinter.recordParents
NPE running matrix job
Lazy loading causes massive delays after a period of inactivity when loading dashboard (keep symlinks for last failed build etc.)
Computer.getUrl wrong when spaces are present (broke context menu for slaves with spaces in their name)
hpi:run does not work on a bundled plugin. (Irrelevant for Jenkins Enterprise.)
Incompatible signature change in 1.489: AbstractProject.doBuild
FingerprintAction deserialization leads to NPE
"Delete Project" link fails with 403 Exception: No valid crumb was included in the request. Also switched confirmation before deleting jobs or wiping out workspace to a dialog.
Reload configuration from disk no longer works after upgrade to Jenkins 1.512.
The 'Discard Old Builds' advanced option - removal of only artifacts - does not work after 1.503 for Maven projects.
Build Now link on MultiJob page doesn't work
Parameter descriptions need to use the (e.g. wiki) markup formatter.
Standalone install does not work with Apache + mod_proxy_ajp + SSL
NPE (isEmpty) from main.groovy (ListView serialization problem)
Decorated Launcher Does Not Maintain "isUnix" for RemoteLauncher
DependencyClassLoader#getTransitiveDependencies returns disabled plugins
update view via REST API doesn't work
LastSuccessful and LastStable symlinks are invalid under Windows
Test harness packs copies of Maven into plugin archive
10,000+ jobs tied to a label make Node index page unusably unresponsive
Builds disappear from jobs - hudson.util.IOException2: Invalid directory name - java.text.ParseException: Unparseable date: "39"
MavenModuleSetBuild.getResult is expensive
Can't build using maven 3.1.0. Not fixing in 1.509.3 but noting the issue more clearly.