CiviCRM

Submitting Test Page Unexpectedly Schedules Mailing

After a year's use without an issue, all of a sudden, CiviMail started behaving odd. When creating a new mailing, whenever I submit the Test page, the mailing gets unexpectedly and prematurely scheduled for an immediate delivery. This is true for both the "Send test" and "Next>>" buttons on that page. I haven't tried the "Save & Continue Later" one.