This has been an issue for over a year, which I find very surprising.
Once you install WordPress with the default theme (Twenty Twenty Three) your dashboard will be completely broken (text only, impossible to navigate).
To fix this, add this line to the end of your wp-config.php file:
PHP Code
define('CONCATENATE_SCRIPTS', false );
If Softaculous is looking for developers capable of fixing this issue, don't hesitate to contract me for a few hours.