On the 2022/02/12 around 18:00 UTC we were made aware of missing push campaign analytics on the dashboard. After an investigation we found out the root cause and quickly deployed a fix which corrected the problem over the following hours. A new version of a service used by our analytics pipeline had a bug handling some internal events which caused the pipeline to stall and stop computing the push campaign analytics.
Push campaign analytics were no longer computed for push campaigns created after the 2022/02/11 around 18:00 UTC and before the 2022/02/12 around 19:00 UTC; they were not available on the dashboard or via the campaigns API. Once we deployed a fix the analytics pipeline worked correctly again and started to compute the missing push campaign analytics.
This bug only impacted the analytics: all push notifications were correctly sent during this period.