When a ticket is closed, the PSA sync re-adds the existing assignee to the thread, and Thread sends them a "You have been assigned Thread…" Slack DM even though the assignee never changed. There is nothing new for them to act on, so the DM is noise and misleading. Example Ticket: T20261005.0034 (internal id 301651012), Loring Smart Roast, Autotask Assignee: Cody Farrell (member id 1545656), assigned since early October 2026-10-29 10:17 PT: status set to Complete. The thread log shows "PSA added Cody Farrell to the Thread." Two Slack DMs arrived at 10:17: "Thread has been updated" card (Status: Complete). This one is expected and wanted. "You have been assigned Thread #T20261005.0034 for Faviola Ruiz from Loring Smart Roast." This one is the bug. Expected: Closure card only. No assignment DM when the assignee didn't change. Actual: The PSA re-adds the existing assignee on closure, and Thread treats it as a new assignment and sends the DM. Impact: Misleading alerts on closures. Turning off chat platform notifications would also remove the closure alerts users want, so there is no good workaround.