@mariusjopen
Thanks for your reply. I had a look through and there seem to be some conflicting things going on in the CSS(?).
What confuses me is that I don't have any custom CSS applied to my site and don't understand how just disabling the mobile title in the settings doesn't work. Never had this issue before.

Toggling the circled line of code seems to do the trick. Like I said earlier, my CSS skills are not great. I've tried the following in the mobile custom CSS:
.mobile-theme .page .entry-title {
display: none;
}
.mobile-title {
visibility: hidden;
}
.sitetitle, .laynav, .project-arrow, .mobile-title {
visibility: hidden;
}
But none of those work. Appreciate your patience.
Carl