The SiteOrigin Editor plugin stopped working for me. New posts don’t save/update at all after I add content.
I’ve had the same issues as these users (https://siteorigin.com/thread/siteorigin-content-editor-not-saving-content/) and (https://siteorigin.com/thread/edits-not-saving-page-builder/) and have done all the troubleshoooting steps.
1) turning off plugins and re-activing
2) clearing cache
3) updating themes
4) checking php