1.5.3

This is the third patch release for the 1.5 branch following the v1.5.2 release. The following changes are included in this release:

• ✨ Add “accessibility” sanitizer to ensure role and tabindex attributes are present for elements with on="tap:…" attributes. #4528, #4535
• ✨ Add button into Site Health test to re-enable CSS transient caching. #4523, #4522
• ✨ Reduce scenarios where DB writes are performed during frontend requests by restricting plugin upgrade routine to admin-authenticated requests. #3284, #4538
• 🐛 Prevent styles from being removed in Customizer preview with Standard mode. #4551, #4553
• 🐛 Restore unification of multi-page post content in Reader mode. #4547
• 🐛 Force status code of validation responses to be 200 so that validation results can be obtained for non-OK responses (e.g. the 404 page). #4532, #4533
• 🐛 Use title case for Paired Browsing link in edit post screen. #4540
• 🐛 Ensure that validation query vars persist through redirects. #4544
• 🐛 Fix various issues with Mustache templates. #4446, #4583
  • Skip validating attributes for layout (e.g. width, height, and sizes) when elements are inside of Mustache templates (in both template elements and script elements).
  • Skip validating attributes containing Mustache template variables when the element is inside of a Mustache template.
  • Ensure that form sanitizer recognizes Mustache templates located in script[type=text/plain][template=amp-template] elements in addition to template elements.
  • Skip processing style attributes that contain Mustache template variables inside of script[type=text/plain][template=amp-template] elements in addition to template elements.
  • Ensure that URL attributes in Mustache templates do not have Mustache template variables URL-encoded.
• 🏗️ Add Requires plugin header information. #4520, #4543
• 🏗️ Update Optimizer test specs. #4527
• 🏗️ Update tests after block-library/style.css changes in Gutenberg 7.9. #4579
• 🏗️ Stub request based on test scenario to fix failing test in Optimizer library. #4588
• ❄️ Mock all embed tests and rename embed class files. #4474
• ❄️ Fix unit tests on WordPress trunk due to introduction of loading=lazy. #4563, #4564

See full diff of changes.

Props Alain Schlesser (@schlessera), Alberto Medina (@amedina), Kasper Myram (@kmyram), Pierre Gordon (@pierlon), Ryan Kienstra (@kienstra), and Weston Ruter (@westonruter).

Installation

Now available to install via WordPress.org.

You can also install the amp.zip build linked below by uploading it in the WordPress admin.

To install as a Git submodule, consider 1.5.3-built.