Kindly take a look at the image (link to the image given in the ‘Your website URL‘ box). This did not happen previously and it happening out of nowhere recently. Should be after one of the recent updates, if I am not wrong. And no, I did not make any changes recently to the site design. So, I am pretty sure it is not from my side.
This issue happens only in Safari Browser on iOS(I tested it on iOS 11.3.1, if that matters).