Hello Themeco,
We’ve had this issue occur at multiple other customers: Latest WPML (and also its Beta version) corrupt the custom CSS/JS of a page
We dug deeper and found out the cause, but not necessarily the proper clean fix. WPML says it’s up to you to have a wpml-config.xml file to define how the _cornerstone_settings is handled.
While it’s “fixed” for our current instance, we’re trying to find which side should apply a permanent fix to avoid fresh installs from encountering this issue.
We replicated the issue on their sandbox using: Pro (for Cornerstone), WPML and WPML Strings Translation.