Files out of sync with actual file system

First of all, big thanks to all your work, TotalFinder is amazing.

I do have a big issue at the moment. I use Dropbox collaboratively but when others add files to the shared folder I don’t see them. Seems like TotalFinder is caching stuff, as when I do “ls” in that directory I get the correct files. So Dropbox is syncing fine. Also when I relaunch TotalFinder it’s okay again.
Is there a way to force refresh a view, like F5 or cmd + R?