In testing 16.1 RC1 and the new pattern syncing, I noticed that with a classic theme you can control the sync state. In talking with @youknowriad about this he indicated this shouldn't be possible because otherwise one will be able to create "reusable blocks" that references a "non synced pattern".

In this case, we should show the sync state but not allow the option to edit. If it does remain for some reason, the design needs to be updated as the sync toggle isn't descriptive of what's changing, goes to the next line when toggling, and initiates a save state when no changes occur.