Can't view a bulk email in the browser without being logged in
When sending a bulk email via CiviMail it is possible to set the visibility of a web-viewable version of the email message to either "Public Pages" or "User & Admin only". When set to public, and with the relevant permission set for anonymous users, it should be possible to view the mailing in a browser window. I've tried this now with two different sites (both running 5.11.0) and when viewing the mailing URL without being logged in I get a fatal error. I initially assumed that this might be linked to Mosaico, but the same is also true when trying to view a mailing sent using the traditional CiviMail UI. I'll update both sites to the current stable version (5.12.4 at the time of writing) and see if this improves.