My client uses SoundCloud embed iFrames in some WPBakery Visual Builder posts.
The posts look fine, but the results in search are showing builder codes:
Using this post as a reference (front end): https://www.hitechanswers.net/day-9-ladies-dancing-about-health-it/
I set up the site on Staging and changed themes, and the problem does not appear:
Highend Version: 188.8.131.52
Wordpress Version 4.9.1
WPBakery VB: Version Version 5.4.5