https://wccftech.com/monthly-pixel-security-bulletin/

A few months ago, Google included a new section in the primary Android Security Bulletin consisting patches for Pixel and Nexus devices. The October security bulletin featured an all-new “Pixel / Nexus Security Bulletin.” The November security patch comes with a dedicated section listing “Functional updates” like bug fixes for the Nexus and Pixel devices.

After detailing the fixation of various security loopholes that plagued the Nexus/Pixel devices, Google has now listed a separate new section named “Functional updates” or “issues not related to the security of Pixel devices.” This section lists the functionality issues that are not related to the security of the Pixel devices. The section also includes a table that contains various issues such as Bluetooth or mobile data, and it also shares the summary of every issue.