Mentioned in [52650] on Core SVN:
Users: Return a `WP_Error` from `wp_insert_user()` if the `user_url` field is too long.

Created ticket #44107 on Core Trac:
wp_insert_user should return WP_Error if user_url's length is too long

Mentioned in [35268] on Core SVN:
Bust object term cache in `wp_remove_object_terms()`.

Created ticket #34338 on Core Trac:
wp_remove_object_terms() should call wp_cache_delete() like ...

Created ticket #20712 on Core Trac:
Wrong data type returned from get_option for "page_on_front" after ...

Created ticket #20171 on Core Trac:
Categories/Tags links are broken in WP 3.3.1, with multisite/subfolder ...

Created ticket #20170 on Core Trac:
The Incutio XML-RPC Library does not strip invalid XML characters