Dropbox selective sync - is it possible to have new folders created on other devices NOT be automatically added to sync folders on current device?

For example:

I have the following folders in my Dropbox:

Folder1
Folder2
Folder3

On PC1, I have only the following folders selected in selective sync:

Folder1
Folder2

Folder3 does does not sync to this PC as it is omitted in selective sync.

Now on PC2, I create a new folder, Folder4.

Dropbox automatically adds the folder to the selected sync folders on PC1

So I now have on PC1:

Folder1
Folder2
Folder4 (added automatically to selective sync folders)

Is there a way to set up Dropbox so that Folder4 is not synced to PC1 until I explicitly select it in selective sync?

Answer

You could do this, but only with subfolders:

Dropbox --> PC1     --> Folder1
                    --> Folder2
        --> PC2     --> Folder3
                    --> Folder4
        --> All PCs --> Folder5

So PC1 has selective sync setup to sync PC1 and All PCs, PC2 has selective sync setup to sync PC2 and All PCs.

Therefore if PC2 creates PC2 --> Folder6 it will not be synced to PC1.

Unfortunately adding a subfolder of a partially synced folder causes any new folders to also sync, so this is the only current way for this to work.