In the navigation widget code, all links have a title. For text messages this is not critical, but mail definitely shouldn’t have titles. Do you leave this option for spammers to parse mail from the site?

example:

<div class="astroid-navigation small" id=n-61281d2310dc2c23083129><nav class="nav flex-column"><a id=item-61281d52fef9ac20897384 class=nav-link href=mailto:info@example.ru title=info@example.ru>