Edit: This seems to be an issue with all type="password" fields that have a description without rules=""
In such cases, an extra description is displayed on top of the field. I'm working on a fix

It appears as if the person who wrote this code has intentionally taken extra efforts to hide the description from coming below it so they could place it above. Are you sure this was unintentional and needs to be fixed? (Maybe they kept it above the field because the message is an important warning and needs extra emphasis?)

This can be fixed by removing the hiddenDescription attribute and the markup above. I'd be happy to submit a PR for this if this issue can be confirmed.

<field
	name="password"
	type="password"
	label="COM_CONFIG_FIELD_DATABASE_PASSWORD_LABEL"
	description="COM_CONFIG_FIELD_DATABASE_PASSWORD_DESC"
	filter="raw"
	autocomplete="off"
	size="30"
	hiddenDescription="true"
	lock="true"
/>

Please test PR #33536