Burrow reports fake values in the first few minutes after starting

As per screenshot - first few minutes are reported with fake values. After few minutes it provides correct values.


Start by reproducing Burrow startup and compare the lag values reported during the first few minutes with those reported after stabilization, using the attached screenshot as context. Trace the startup path that produces the initial values; done means the reported values are accurate from startup rather than only after several minutes.

Written by the indexing model from the issue text.