Changelog for 2.263.1

Legend:

security fix
major bug fix
bug fix
major enhancement
enhancement

Community feedback:

no major issues
notable issues
required rollback

What's new in 2.263.1 (2020-12-03)

Changes since 2.263:

Fix hidden page elements from radio blocks showing up when they should not. (pull 5046, issue 64040 , issue 64136 )
Fix file handle leak when viewing corrupted build logs. Upgrade Stapler from 1.260 to 1.261. (pull 5038, Stapler 1.261 changelog)
Prevent the Build History Widget from crashing when users have Discover permissions without Read for folders. (issue 63868)
Winstone 5.12: Update Jetty from 9.4.30.v20200611 to 9.4.33.v20201020. Introduce LowResourceMonitor from Jetty by upgrading to Winstone 5.12. (issue 64035 , pull 5034, pull 4975, Winstone 5.12 changelog, Jetty 9.4.31.v20200723 changelog, Jetty 9.4.32.v20200930 changelog, Jetty 9.4.33.v20201020 changelog)
Improve performance of authorisation strategies when the authentication realm is case insensitive. (issue 64039)

Notable changes since 2.249.3:

Fix Debian / Ubuntu Java version check for Java 11.0.9.1. (issue 64212 , pull 198 (packaging))
Graduate Overall/SystemRead permission to general availability (GA) status. (pull 4909, JEP-224)
SSHD module 2.7: Remove deprecated key exchange and MAC algorithms. (pull 4951, SSHD module 2.7 changelog)
SSHD module 2.7: Allow configuring disabled key exchange and MAC algorithms through system properties. (pull 4951, SSHD module 2.7 changelog)
Improve the layout and clarity of the page displayed when jobs are not yet created. (issue 63592)
Allow users with the Jenkins/MANAGE permission to restart and safe restart Jenkins. (issue 63795)
Set Cross-Origin-Opener-Policy to same-origin. (pull 4910, Cross-Origin-Opener-Policy at developer.mozilla.org)
Improve the scripting capacity related to the API Token system. Provide a way to configure a fixed/default API Token for admin during installation phase. (issue 57484)
Hide description panel in sidebar if historyWidget.descriptionLimit is 0. (pull 4978, Features controlled with System Properties)
Prevent JavaScript error when registering validators in some cases. (issue 42228)
Prevent resource leak in the File Fingerprint Storage implementation. (pull 4992)
Developer: Improve the combobox component to support default value and readonly mode. (pull 4939)
Developer: Allow migration of fingerprints from local storage to external storage. (issue 62757)
Developer: Expose fingerprint range set serialization methods for plugins. (pull 4888)
Developer: Pluggable Artifact Storage: Make the VirtualFile API generally available to plugin developers. (pull 4974, JEP-202)
Developer: A SimpleBuildStep or SimpleBuildWrapper can now choose not to require a workspace context (working directory and launcher). (issue 46175)
Developer: Cloud implementations are given more context about ongoing planned nodes. Add CloudState to be passed to Cloud#provision and Cloud#canProvision methods. (pull 4922)