Mentioned in [53408] on Core SVN:
Users: Fail gracefully when checking mapped capabilities without providing the required object ID.

Mentioned in [53380] on Core SVN:
Media: Remove error suppression in `wp_filesize()`.

Mentioned in [53372] on Core SVN:
Media: Remove error suppression in `wp_filesize()`.

Mentioned in [53291] on Core SVN:
Comments: Avoid DB error in comment meta queries.

Mentioned in [53249] on Core SVN:
Docs: Use third-person singular verbs for function descriptions in `wp-includes/capabilities.php`, as per docs standards.

Mentioned in [53238] on Core SVN:
Posts, Post Types: Fix option validation in `stick_post()`.

Mentioned in [53228] on Core SVN:
Media: Remove `attachment_fields_to_save` filter and deprecate `image_attachment_fields_to_save()`.

Mentioned in [53190] on Core SVN:
I18N: Move code out of a translatable string in `WP_Theme::__construct()`.

Mentioned in [53124] on Core SVN:
Plugins: Update item count when plugin deleted.

Mentioned in [53089] on Core SVN:
Editor: Limit display of tags on classic editor.

Closed ticket #55527 on Core Trac:
<em></em> disappears from post titles when post (in 'editing' view) is ...

Mentioned in [53063] on Core SVN:
Mail: Replace empty site title with domain name in email subjects.

Mentioned in [53054] on Core SVN:
Docs: Use third-person singular verbs for function descriptions in `WP_Customize_Manager` class, per the documentation standards.

Mentioned in [53048] on Core SVN:
Docs: Remove HTML markup from `WP_REST_URL_Details_Controller` class method summaries.

Mentioned in [53004] on Core SVN:
Plugins: Avoid stomping of some variables in `wp-settings.php`.

Mentioned in [52984] on Core SVN:
Docs: Adjust documentation in `get_post_galleries()` tests per the documentation standards.

Mentioned in [52983] on Core SVN:
Tests: Remove some unused variables in `phpunit/tests/filters.php`.

Mentioned in [52965] on Core SVN:
Coding Standards: Rename the `$theBody` variable to `$body` in `WP_Http_Curl::request()`.

Mentioned in [52964] on Core SVN:
Coding Standards: Rename the `$strResponse` variable to `$response` in `WP_Http_Streams::request()`.

Mentioned in [52963] on Core SVN:
Coding Standards: Rename the `$headerValue` variable to `$header_value` in `WP_Http_Streams::request()`.

Mentioned in [52962] on Core SVN:
Coding Standards: Rename the `$strHeaders` variable to `$headers` in `WP_Http_Streams::request()`.

Mentioned in [52961] on Core SVN:
Coding Standards: Rename the `$requestPath` variable to `$request_path` in `WP_Http_Streams::request()`.

Mentioned in [52960] on Core SVN:
Coding Standards: Rename the `$bodyStarted` variable to `$body_started` in `WP_Http_Streams::request()`.

Mentioned in [52958] on Core SVN:
Coding Standards: Rename the `$cat_ID` argument to `$cat_id` in `get_the_category_by_ID()`.

Mentioned in [52954] on Core SVN:
Users: Check maximum length of `user_nicename` after filters are applied.

Mentioned in [52952] on Core SVN:
Plugins: Convert `apply_filters()` into a proper variadic function.

Mentioned in [52935] on Core SVN:
Docs: Misc.

Closed ticket #55368 on Core Trac:
Handle ajax failure when doing actions on themes/plugins

Mentioned in [52830] on Core SVN:
Taxonomy: Improve code quality within `_prime_term_caches()`.

Mentioned in [52827] on Core SVN:
Docs: Use third-person singular verbs for function descriptions in `wp-includes/class-wp-user.php`.

Mentioned in [52812] on Core SVN:
Themes: Make sure the `current_theme_supports-{$feature}` filter is consistently applied.