We are continuing to have some residual issues with the Cornerstone builder after the last update.
The new bug we found is that it is not loading content modal (cta popup) in the builder page and is instead showing at the bottom of the page.
We have implemented a CSS fix on the main site so the client can continue to work, but you can view the problem on the staging site we set up for the last cornerstone case.
Would it be possible to have someone take a look? It would be good to get a proper fix into the builder instead of our css fix.