Why do my agent statuses differ between the assignee ticket field and Analytics?

Question

I noticed that some agents do not appear as Online on the live dashboards in Analytics, but they have a green dot next to their name in the Assignee ticket field. Why does this happen?

Answer

This happens when the agent status is Transfers only. The live dashboards in Analytics do not show them as Online, but the Assignee ticket field shows a green dot for both Online and Transfers only.