WordPress 5.5.1, a maintenance release, has been pushed out to all VIP sites which were running WordPress 5.5.
The release contains a number of bug fixes, largely related to new features introduced in WordPress 5.5, and to the use of jQuery.
WordPress 5.0 introduced the wp-i18n JavaScript package that provides the functions needed to add translatable strings as you would in PHP. In order to do this, a number of global JavaScript objects were removed without being deprecated. WordPress 5.5.1 adds a backfill for these globals so they no longer cause JavaScript errors. This backfill is temporary, and will be removed in WordPress 5.7. However, this gives plugin and theme developers additional time to remove conflicting code and switch to using the wp.i18n Javascript object.
This maintenance release features 34 bug fixes, 5 enhancements, and 5 bug fixes for the block editor. WordPress 5.5.1 is a short-cycle maintenance release. The next major release will be version 5.6.
For more details about this release (including specific changes), please see the announcement post and release notes.
Have questions?
If you have any questions related to this release, please open a support ticket and we will be happy to assist.
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