I was researching the Mughal empire, and came upon this on the Brittanica site (https://www.britannica.com/biography/Babur)
"Bābur, (Persian: “Tiger”) also spelled Bābar or Bāber, original name Ẓahīr al-Dīn Muḥammad, (born February 15, 1483, principality of Fergana [now in Uzbekistan]—died December 26, 1530, Agra [India])..."
The problem is/was that all of the letters "ā" were displayed as squares. (See the attachment.)
