Running the maintenance/update.php script on a PostgreSQL database when the AbuseFilter extension is loaded results in this error:
[94d17a1cd1c1881e7480c9ae] [no req] ArgumentCountError from line 699 of /srv/http/mywiki/includes/installer/PostgresUpdater.php: Too few arguments to function PostgresUpdater::changeField(), 3 passed in /srv/http/mywiki/includes/installer/DatabaseUpdater.php on line 472 and exactly 4 expected Backtrace: #0 /srv/http/mywiki/includes/installer/DatabaseUpdater.php(472): PostgresUpdater->changeField(string, string, string) #1 /srv/http/mywiki/includes/installer/DatabaseUpdater.php(440): DatabaseUpdater->runUpdates(array, boolean) #2 /srv/http/mywiki/maintenance/update.php(174): DatabaseUpdater->doUpdates(array) #3 /srv/http/mywiki/maintenance/doMaintenance.php(111): UpdateMediaWiki->execute() #4 /srv/http/mywiki/maintenance/update.php(219): require_once(string) #5 {main}
Hence, the AbuseFilter extension cannot be used on systems using PostgreSQL.