Allow overriding the Jenkins session ID suffix so it doesn't change on every restart, possibly resulting in too many cookies.
(how to set session ID, issue 25046, issue 44894)
Add documentation for time zone specification for cron patterns (e.g. SCM polling).
(issue 9283)
Do not submit form when pressing Enter in the plugin manager's filter field.
(issue 44523)
Jenkins failed to perform some cleanup tasks, including saving the build queue, if stopped via REST /exit, CLI shutdown, or when restarting from Install as Windows Service.
(issue 44589)
Don't check whether disabled administrative monitors are active or not on the Manage Jenkins page.
(issue 44608)
When starting the jenkins.war directly, properly check for Java 8 as minimum instead of Java 7 before proceeding.
(issue 44764)
Prevent NullPointerException when calling restart CLI command. (regression in 2.57)
(issue 44769)
Prevent possible NullPointerException when listing remote directories using the FilePath#list() and FilePath#listDirectories() APIs.
(issue 44942)