Drupal - How to get drush to work with xdebug -- may have recently broken

The former drush script is still available as drush.launcher. I would recommend making this your entrypoint when using Drush with xdebug, and omit the drush "finder" script (called simply "drush") altogether.

If this does not work for you, you should make a report in the Drush issue queue on GitHub.