Smartsheet change history: Smartsheet add-ons for Google is not working

Smartsheet reported a major outage of Smartsheet and Brandfolder add-ons for Google Docs, Sheets, and Slides from 2026-06-10 22:21 UTC to 2026-06-11 11:02 UTC, lasting 12 h 41 min. The postmortem says Google’s removal of an older runtime broke Smartsheet Merge for all ~234,000 users; code and deployment updates resolved it, with no customer data lost.