Caja dropbox extension doesn't update the update file status

I have a fresh install of Ubuntu mate and the problem is using Caja file manager , when I change/create a new file/folder in a dropbox folder, the status of icon doesn't update (see the screenshot):

The folder containing the new file is updated. Also the dropbox icon beside the clock is updated and there is no problem with that.

The version of Caja file manager is V1.12.7
The version of Caja dropbox extension is 1.12.0

EDIT: in Caja, if I press Ctrl+R, then dropbox status icons updates.