Hi strobley,
First of all, we are sorry if you got confused about the case. Let me give you a complete context:
The srcset
feature is not available in the X and Pro themes. The original image handling system uses the normal src
code and that is why it is not available in the Cornerstone or the Content/Header/Footer builders.
Now, the standard WordPress media icon in the standard editor or Gutenberg uses the srcset
originally but we do not need that when the theme is installed as the whole system is coded another way. To be able to enable usage of the media icon srcset
functionality please follow the article below:
https://xthemetips.com/size-matters-the-x-image-guide/730/
Having said that. the method mentioned above is not a reliable one and in some case you may need to code the srcset
manually.
We already added this as a feature request in our internal issue tracker. Please consider that this will need a huge refactor and rewrite every bit of the core theme and this may or may not be considered in a short term.
I just want to give you context about the feature when using the theme.
Thank you for your understanding.