Summary

A managed wordpress.phpunit run configured with MySQL and multisite boots WordPress without creating the required multisite network tables. PHPUnit continues, but WordPress emits database errors for wptests_blogs and wptests_sitemeta, so multisite behavior cannot be validated faithfully.

Evidence

• Consumer PR: fix: clear managed PHPUnit baseline Extra-Chill/extrachill-events#355
• Failing managed run: https://github.com/Extra-Chill/extrachill-events/actions/runs/30138187262
• WP Codebox source SHA reported by the run: 6aa2b97cd4170cc6a3d2e350d316541547f35a7d
• Homeboy WordPress extension revision: 1cd18d31
• Homeboy: 0.314.2+bbf556096619+cb0497a
• PHP: 8.3.32
• Database type: MySQL
• Managed bootstrap mode: managed
• Multisite: enabled

Runtime configuration:

{
  "database_type": "mysql",
  "validation_dependencies": [
    { "type": "local", "path": "<checkout>/.ci/data-machine", "plugin_slug": "data-machine", "activate": true },
    { "type": "local", "path": "<checkout>/.ci/data-machine-events", "plugin_slug": "data-machine-events", "activate": true }
  ],
  "wp_codebox_multisite": true,
  "wp_codebox_phpunit_bootstrap_mode": "managed"
}

Exact startup diagnostics:

WordPress database error Table 'runtime.wptests_blogs' doesn't exist for query SELECT wptests_blogs.blog_id ... made by pg_run_install_stage, ... wp-phpunit/includes/install.php, ... ms_load_current_site_and_network
WordPress database error Table 'runtime.wptests_sitemeta' doesn't exist for query SELECT meta_value FROM wptests_sitemeta ... made by pg_run_install_stage, ... wp-phpunit/includes/install.php, ... get_network_option
WordPress database error Table 'runtime.wptests_blogs' doesn't exist for query SELECT * FROM wptests_blogs WHERE blog_id = 1 LIMIT 1 ... ms_site_check, get_site, WP_Site::get_instance

The managed suite then reports 276 tests, but current-site lookups and every network option operation are running against an incomplete schema.

Expected

When multisite is enabled, the managed install stage creates and seeds at least the standard blogs, blogmeta, site, sitemeta, registration_log, and signups tables before WordPress multisite bootstrap and plugin activation.

Impact

Consumers cannot establish a real managed MySQL/multisite PHPUnit baseline. Adding per-test cache objects or bypassing get_site() would hide the broken runtime and would not validate multisite behavior.