[Ingest-Management]: Agent with Online, Offline status also appears under "Show Inactive" filter results.

Kibana version:
Kibana: 7.9 BC4

Elasticsearch version:
Elasticsearch: 7.9 BC4

Agent version:
Agent: 7.9 BC4

Browser version:
Windows 10, Chrome

Original install method (e.g. download page, yum, from source, etc.):
From 7.9 BC4

Description
[Ingest-Management]: Agent with Online, Offline status also appears under "Show Inactive" filter results.

Preconditions

1. Kibana 7.9 BC4 cloud environment should be available.
2. Agent should be enrolled on environment.

Steps to Reproduce

1. Open the Kibana 7.9 BC4 cloud environment in browser, then click Ingest Manager>Fleet tab.
2. Click "Action>Un-enroll" option next to enrolled agent and then un-enrolled the same.
3. Notice that agent moves to Inactive state.
4. Re-enrolled the agent and notice that agent now appears under agent list with Online status.
5. Click on Show Inactive Filter and observe that agent with Online status also appears under the Inactive filter.

Test data
N/A

Impacted Test case id
N/A

Actual Result
[Ingest-Management]: Agent with Online, Offline status also appears under "Show Inactive" filter results.

Expected Result
Agent with Online, Offline status should not appear under "Show Inactive" filter results.

What's working
N/A

What's not working
Agent with Offline status also appears under "Show Inactive" filter results.

Screenshot

Logs
N/A

@rahulgupta-qasource : Please review and assigned the issue.

[elasticmachine]

Pinging @elastic/ingest-management (Team:Ingest Management)

Reviewed and assigned to @EricDavisX

[EricDavisX]

@nchaulet can you comment here please?

Nicolas, I suppose the inactive Agent should have eventually disappeared unless there was some problem? If the Agent was active and successful prior, and the host reachable, is there any known bug / reason from the BC4 build as to why it wouldn't have worked? And if no known bug, what details do you need from QA to triage it?

The Agent logs would help for a start I suppose... anything else? @kamalpreetpahwa-qasource can you post those to start? And tell us what OS version the host was?

[EricDavisX]

I want to call out that we shall track the basic work-flow here, the specific of this concern needs to be resolved as well, that the "Un-enroll option is still available for an agent which is already un-enrolled and displayed under Show Inactive filter." From #73236

[nchaulet]

@EricDavisX Currently the show inactive flag show inactive agent + other agent that match your search