Why is my text hyphenated?
There's some hyphenation library on your page. That's no default Drupal behavior. Find that library and remove it or make it ignore your body fields. Probably some JS library.



OP found hyphenator.js inside MYTHEME/vendor/hyphenator.js.

To remove the library, find out where it got added to the site. drupal_add_js() in D7, or some MYTHEME.libraries.yml library declaration in D8. Or just from the theme's info file.

I'd recommend to fix the hyphenation and simply exclude it for certain fields. This probably can be done with only a few lines of custom JS. Find out how by visiting the docs of that library from the link above.