/analytics/status/ingestion/v2 doesn't show correct ingestion progress on build 7.0.0-4862

I did a default-collection ingestion run with build 7.0.0-4862. The ingestion progress reported in /analytics/status/ingestion/v2 was always 0 until the end of the ingestion. The ingestion progress jumped from 0% to 100%.

2021-04-05T22:44:23 [INFO] Analytics has 303,881,484 docs (target is 319,999,859)

2021-04-05T22:44:23 [INFO] Ingestion progress: 0.00%

2021-04-05T22:44:38 [INFO] Analytics has 307,850,953 docs (target is 319,999,859)

2021-04-05T22:44:38 [INFO] Ingestion progress: 0.00%

2021-04-05T22:44:53 [INFO] Analytics has 314,282,755 docs (target is 319,999,859)

2021-04-05T22:44:53 [INFO] Ingestion progress: 100.00%

Job: http://perf.jenkins.couchbase.com/job/triton_analytics/1441/

Build: 7.0.0-4862

https://s3-us-west-2.amazonaws.com/perf-artifacts/jenkins-triton_analytics-1441/triton-srv-01-ip6.perf.couchbase.com.zip

https://s3-us-west-2.amazonaws.com/perf-artifacts/jenkins-triton_analytics-1441/triton-srv-02-ip6.perf.couchbase.com.zip

https://s3-us-west-2.amazonaws.com/perf-artifacts/jenkins-triton_analytics-1441/triton-srv-03-ip6.perf.couchbase.com.zip

https://s3-us-west-2.amazonaws.com/perf-artifacts/jenkins-triton_analytics-1441/triton-srv-04-ip6.perf.couchbase.com.zip

https://s3-us-west-2.amazonaws.com/perf-artifacts/jenkins-triton_analytics-1441/triton-srv-05-ip6.perf.couchbase.com.zip

https://s3-us-west-2.amazonaws.com/perf-artifacts/jenkins-triton_analytics-1441/triton-srv-06-ip6.perf.couchbase.com.zip