Issue #3390693 by mikelutz, smustgrave: MigrationPluginManager::ExpandPluginIds can lose derivative plugins under certain circumstances
(cherry picked from commit d5d6431e)
5 merge requests!11628Update file MediaLibraryWidget.php,!7564Revert "Issue #3364773 by roshnichordiya, Chris Matthews, thakurnishant_06,...,!5752Issue #3275828 by joachim, quietone, bradjones1, Berdir: document the reason...,!5627Issue #3261805: Field not saved when change of 0 on string start,!3106Issue #3017548: "Filtered HTML" text format does not support manual teaser break (<!--break-->)
