Version 3.5.1
Tried with Chrome, Edge, Firefox
Upgrade appeared to be successful but now have a blank page when I access the “List of Campaigns” link. The source code for the resulting page does have lots of content but none of the browers I’ve tried displays anything.
Further information: The database table phplist_message contains all of my campaigns. It also has a blank campaign at the last position. That campaign is not present in the database prior to the upgrade. (I have a backup copy of the database.)
Furthermore, the titles of the campaigns do not appear in the html text that is present in the “List of Campaigns” page.