У вашего броузера проблема в совместимости с HTML5
*Versión en español: https://youtu.be/4frsAL8XKZ8
With this trick, you'll be able to populate the target segment with the source text, exactly as it shows in the original, in the Editor view of Trados Studio 2017
This configuration works in all versions of the software, from Trados Studio 2009.
More useful videos on the SR4T channel.
Cheers!