Tooltip above and under cursor

There is an issue when tooltip opens above the cursor and then under the cursor.
It annoys and makes my eyes tired.
You can see the issue here:
https://youtu.be/AQ89WX1llhY

Test web-page:
https://www.kurs-pc-dvd.ru/blog/brauzery/sravnitelnye-xarakteristiki-populyarnyx-brauzerov-ie-opera-mozilla-firefox-i-google-chrome.html

Could you fix it please?

LeoTranslate: 1.17.6
Firefox 76.0.1