New Ticket Alert stopped working

[diantonio85]

Prerequisites

• Can you reproduce the problem in a fresh installation of the "develop" branch?
• Do you have any errors in the PHP error log, or javascript console?
• [X ] Did you check the osTicket forums?
• [X ] Did you perform a cursory search to see if your bug or enhancement is already reported?

osTicket v1.18.1 (0375576)

all of a sudden New Ticket Alert stopped working with Email Admin (and eventuall the other flags of such field enabled) .

Instead, "New Message Alert" , "New Internal Activity Alert" and "Ticket Assignment Alert" are working. Of course doing "Email diagnostic" works, so it's not an SMTP issue.

What can I do to debug issue? I enabled " Default Log Level" to Debug, but nothing was logged. When a new ticket gets opened Admin does not receive email notification.
Thanks