4.5.1 Release Candidate

A Release Candidate for WordPress 4.5.1 is now available. This maintenance release fixes 11 issues reported against 4.5 and is scheduled for final release next Tuesday, April 26.

Thus far WordPress 4.5 has been downloaded nearly 5 million times since its release on April 12. Please help us by testing this release candidate to ensure 4.5.1 fixes the reported issues and doesn’t introduce any new ones.

Notable Bug Fixes

As noted in the previous post about 4.5.1, there are  two more severe bugs fixed in this release:

  • #36545 – WordPress TinyMCE toolbar/tabs unresponsive in Chrome Version 50.0.2661.75 beta-m (64-bit) and
  • #36510 – Twenty eleven page templates with widgets incorrectly styled.

All Changes

Only a few components received changes. Here’s a list of all closed tickets, sorted by component:

Build/Test Tools

  • #36498 Shrinkwrap npm dependencies for 4.5

Bundled Theme

  • #36510 Twenty eleven page templates with widgets incorrectly styled

Customize

  • #36457 Customizer Device Preview: Use px units for tablet preview size

Database

  • #36629 Database connect functions can cause un-catchable warnings

Editor

  • #36458 Fix support for Safari + VoiceOver when editing inline links

Emoji

  • #36604 Emoji skin tone support test incorrectly passing in Chrome

Feeds

  • #36620 Feeds using an rss-http content type are now served as application/octet-stream

Media

  • #36501 Fatal error: Undefined class constant 'ALPHACHANNEL_UNDEFINED'
  • #36578 wp_ajax_send_attachment_to_editor() bug
  • #36621 Don’t cache the results of wp_mkdir_p() in a persistent cache

Rewrite Rules

  • #36506 Duplicate directives in web.config after WordPress 4.5 installation on Windows

TinyMCE

  • #36545 WordPress TinyMCE toolbar/tabs unresponsive in Chrome Version 50.0.2661.75 beta-m (64-bit)

Update: We’ve released 4.5.1-RC2, which includes the fix for #36629.

#4-5-1, #maintenance, #release