5 days ago I accidentally deleted a folder. I found the folder in the "Deleted Files", and selected it for restore. It started restoring and very soon Dropbox says it's "Up To Date".
The folder itself is back in the Finder where it's supposed to be, but it has only restored a tiny fraction of what was in that folder when it was deleted. I've let it sit a while thinking some more syncing might continue to happen but it sure seems it's done all it's going to do.
More than 99% of what used to be in the folder did not restore.