Hi,
This was identified and a release prepared and sent out over Friday/Saturday. Please be sure you have updated to the latest Swift Framework plugin version from your dashboard.
As this change involved amending the plugin core JS files, you will need to refresh the browser cache to pull in the new files.
There are two issues:
1) Disappearing page builder content – resolved on Friday/Saturday with the latest updates.
2) Formatting removed – not resolved, we are working on this now.
Thanks.