We experience this too. We have a custom theme set and it gets switched off and reverts back to the default. We thought at first it was down to a user...

Thank you. I've tried renaming theme.inc.php and let's see what happens. We do have various layers of caching but not sure how that would affect this...

The latest release candidate for OSTicket 1.17RC3 includes support for the new oAuth2 authentication method for IMAP and SMTP. We have trialled this ...

Thank you I will replace as instructed 🙂 Jeremy