We have rolled out a fix for this issue. Do not close your open files. Changes to your files should start syncing automatically. If your work does not save, download the .fig file to your desktop and contact support@figma.com. Thanks for your patience.

If you are encountering an issue while trying to save your work, please keep that tab open while we work to correct the issue.

After a couple reports of data not saving properly, the team has identified the cause and is working on a fix.