We've confirmed that all systems are back to normal with no customer impact as of 8/18, 19:00 UTC. Our logs show the customers would have seen intermittent data gaps when using Workspace Based Application Insights starting on 8/15, 16:45 UTC and that during the 3 days, 2 hours and 15 minutes that it took to resolve the issue, 657 customers of this public preview feature in East US, South Central US, and West US 2 regions experienced the issue.
Root Cause: A regression in a recent deployment that has been rolled back.
Incident Timeline: 3 Days. 2 Hours & 15 minutes - 8/15, 16:45 UTC through 8/18, 19:00 UTC
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.