We have included other metrics that are used in the calculator (%gc, %cpu, bytes in use), and they all seem to be normal at the time "5" is reported for "Connection State".
Release : 21.3
Component : Introscope
Please check the metrics with 15 seconds resolution. You may have to also narrow down the time range, so that 15 seconds resolution data points are clear.
% Time Spent in GC
% CPU Utilization (Host)
Bytes In Use
It seems like the reason is the resolution of the data points. You are unable to see those gaps because you have higher then 15 seconds resolution.