Sharepoint online DLP alerts

Hello All

I have created the DLP policy with a very simple condition and action.

If content content U.S. Social security number 1- ANY
AND

content is shared from M365 - with people outside organization.

Action

Block only people outside organization.

User notifications with Policy tips

Allowed the user overrides

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Whenever I am sharing the content outside the organization I am able to see the policy with override option. After overriding the policy , it is allowing to share content. However it is not generating alert in the dashboard. I am able to see the DLP undo rule but not the alert.

Please advise if it is by design or am I missing something important.