You (and the rest of the accounts with the exact same templates as you) have no description in Link Preview on many pages (those where there is no subtitle, I suppose), this is one of them. Other examples: https://www.unian.ua/health/country/10443780-spisok-pomerlih-v-ukrajini-vid-koru-popovnyuyetsya-chas-ogolositi-epidemiyu.html, https://religions.unian.ua/orthodoxy/10340055-yak-kanonizuyut-svyatih-ros.html.