Changelog

Major bug fix

Fix regressions in forms submissions from unwanted form validation in any browser (regression in 2.289). JENKINS-65585

Enhancement

Recommend running on Java 11. JENKINS-65577
Change the word 'number' to 'integer' in the error message of the number field. pull 5538
Show implied plugin dependencies or a count of dependencies for plugins split from core. pull 5472
Bump spring-security-bom from 5.4.6 to 5.5.0. pull 5505, Spring project spring-security 5.5.0 release notes
Winstone 5.18: Update Jetty from 9.4.40.v20210413 to 9.4.41.v20210516 for bug fixes and enhancements. pull 5540, Winstone 5.18 changelog, Jetty 9.4.41 changelog
Developer: View is now a DescriptorByNameOwner allowing its use as AncestorInPath. pull 5533
Remove the Bytecode Compatibility Transformer library and related code from Jenkins core. Developer: Plugins that rely on the hudson.model.Queue$Item#id or hudson.model.AbstractProject#triggers fields must be updated to call the corresponding getters. pull 5526, Vertx plugin, Slave Prerequisites plugin
Developer: Remove JTidy dependency from Jenkins core. Plugins that use JTidy functionality must be updated to explicitly declare a dependency on JTidy rather than relying on Jenkins core to provide this library. pull 5521, NIS notification lamp plugin
Internal: Remove partial (~6% complete) Arabic and Portuguese translations pull 5518
Internal: Upgrade from Remoting 4.8 to Remoting 4.9 with bugfixes and dependency updates. pull 5539, Remoting 4.9 changelog

Bug fix

A specific and rarely encountered internal error now again correctly shows details about the cause (regression in 2.292). pull 5537
Improve contrast for the checkbox in the login page. pull 5536
Jenkins redirects users to the previous page after login even if they were able to view it while not logged in (regression in 2.266). JENKINS-64991

Changelog for 2.296