It is suboptimal to have releases this quickly in succession, but the details below hopefully describe a scenario that you will agree was worth resolving as quickly and safely as possible.
5.5.2 and ZIP installs
An error with one of the fixes made in WordPress 5.5.2 caused an issue with installing ZIP packages available on WordPress.org for new versions of 5.5.x, 5.4.x, 5.3.x, 5.2.x, and 5.1.x. The issue only affected fresh WordPress installations without an existing wp-config.php file in place.
During the release process for 5.5.2, the package testing workflow