= 2.6.7 – 08.06.2026 =
* Removed the Script Manager MU Mode dependency on pluggable.php to avoid conflicts with SMTP and other plugins that override core pluggable functions.
* Fixed an issue where Script Manager MU Mode could permanently deactivate plugins when another plugin (such as Freemius) wrote a filtered active_plugins list back to the database.
* Fixed an issue where Script Manager MU Mode could resolve some custom post type URLs to the wrong post ID.
* Fixed an issue where Fetch Priority would always use the first matched priority value when the same selector had separate device rules.
* Added ABSPATH checks to plugin include files where needed.
* Added capability checks to Used CSS and Minify clear actions, and sanitized the Used CSS file type parameter.
* Hardened license form request verification.
* Improved license and update API request handling to reduce how often sites contact the Perfmatters server, including longer update check caching, cached license status checks, and a staggered retry delay after failed update requests.