How is 'Time In Source Status' calculated on transitions tab

[Ryan McLaughlin]

I am trying to understand how the 'Time In Source Status' column is calculated because it looks like it is way off.

For example I have an issue that claims 

However, when I look at the 2 transition on the history tab it tells a completely different story.

the first transition looks like this

and later 

then the second transition 

and a long time later

The second transition is ~7 weeks long. So why is the Transition tab only showing 4 days? Even if it only counted working hours (ours are M-F) it should still be much more than 4 days.

We are using Jira Cloud 

[J.M.]

I would love it if someone from @[deleted] answered this