Performance Chat Summary: 1 July 2025

The full chat log is available beginning here on Slack.

Table of Contents

WordPress Performance Trac tickets

@westonruter mentioned that the PR adding fetchpriority support for scripts (PR #8815) needs additional reviews if it is to land in the next minor release. But if WordPress 6.9 really is coming later this year then, the feature may be better suited as a major enhancement for WordPress 6.9.
- @flixos90 suggested that if WordPress 6.9 is going to be released this year, ticket #61734 should be moved from the 6.8.2 milestone to 6.9, as there would no longer be a reason to allow enhancements in a minor release.
- @westonruter noted that he added this topic to the agenda for the core committer meeting later that day, asking whether the temporary relaxation of the minor release policy should be reconsidered if WordPress 6.9 is happening this year.
@flixos90 emphasized the need to start triaging tickets targeted for WordPress 6.9, noting many lack assigned owners or updates. Prompt action was encouraged to ensure timely progress.
@rollybueno raised questions regarding caching improvements for the ticket #63045.
- @flixos90 acknowledged the point about using more readable cache keys but noted that this would break a convention used consistently throughout WordPress Core. He suggested that this requires further discussion to decide if breaking that convention is worthwhile and, if so, whether other cache keys across Core should also be updated for consistency.
- @spacedmonkey added that ticket #59592 should ideally land before #63045 as they are related.

@flixos90 shared that he addressed feedback on View Transitions PR #2037, and it is now ready for another round of review.
- He also announced plans for a new release of the View Transitions plugin soon, highlighting several significant enhancements and bug fixes currently pending in open PRs.
@mukesh27 shared an update regarding the Auto Sizes plugin, confirming successful smoke testing and announcing the release of Auto Sizes version 1.5.0, which improves calculation of image sizes in nested blocks such as Group and Columns.

@b1ink0 asked for volunteers to lead the upcoming Performance Bug Scrub scheduled for July 8, 2025. Interested contributors were invited to sign up on the schedule spreadsheet.