When I set up a url path alias in Drupal for a civievent (eg. pubquiz rather than civicrm/event/info&reset=1&id=33) and try to access the alias I get the message 'Access denied You are not authorized to access this page' when I try to access it. This only affects the alias, not the raw civevent path offered by Civi and used in the alias setup.
This approach has worked perfectly in the past, but hasn't been used for six months or so. Other aliases for native drupal paths work perfectly.
When I look at the list of url links in Drupal, I see that for Civievents the 'alias' link looks fine but the 'system' link is munged. It displays as 'civicrm/event/info&reset=1&id=33' but the actual link is https://XXXX.org/?q=civicrm/event/info%26reset%3D1%26id%3D33
A recent change in Drupal 7 ?
I can work a round this in Webforms, but this way was easier for simple events.
Drupal 7.7.1/Civi 5.24.3