I am using below line of code to show the icon but instead it is showing as a dot. Tried on chrome and edge.
<lightning:icon iconName="utility:warning" alternativeText="Warning!" title="Warning" />
Referring this documentation: https://developer.salesforce.com/docs/component-library/bundle/lightning:icon/example
<lightning-icon icon-name="utility:warning" alternative-text="Warning!" title="Warning" ></lightning-icon>
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