It was discussed here, but it is a separate issue.
I have a card region (on apex.oracle.com), with Card Action Redirect To URL (just use # as URL for this purpose).
Add this link attribute (copied from the Help):
title="Click to edit"
Run the page and hover the mouse over the card. The title does not show.
Inspect the element and you will see that APEX changed the attribute to:
title="click to edit"
I have not checked if for other links, just for this card link.