UPDATE:
You can backup this file: /ja_stark/html/com_contact/contact/default_links.php
and replace with attached file (unzip first)
then add this custom css code:
.j4 .contact #display-links, .j5 .contact #display-links {
display: block;
}
.j4 .contact ul.nav.nav-stacked, .j5 .contact ul.nav.nav-stacked {
justify-content: flex-start;
}
This fix will be available in the next release of this template.