Mentioned in [44328] on Core SVN:
Customizer: Remove a line of commented-out code in `WP_Customize_Nav_Menus::customize_register()`.

Created ticket #44633 on Core Trac:
Commented out code in class-wp-customize-nav-menus.php

Created ticket #44565 on Core Trac:
Find plural text in description of username on profile page.

Created ticket #44530 on Core Trac:
Post or page custom fields give wrong error message when enter value only.

Closed ticket #42605 on Core Trac:
category_description() does not work properly since 4.9

Created ticket #42640 on Core Trac:
Setting general interface "New user default role"