Set WordPress app database collation to uft8_general_ci instead of latin1_swedish_ci
When installing a new WP app, the database collation is set to latin1_swedish_ci. It should be utf8_general_ci. Just change the way the app installer works, to set it to the correct setting when installing a new WP app. Also consider adding the collation to the new WP install's wp-config.php file to help keep all tables using the correct collation: https://codex.wordpress.org/Editing_wp-config.php#Database_collation.
We've started to see some issues on some sites due to mixed table collation. This would help prevent issues by keeping everything on compatible variations of utf8.