Please describe the problem:
  if you open a folder in natilus, and later have it deleted in natilus. The
button under toolbar presents the folder is still there.

Steps to reproduce:
Assume the folders are organized like this:
 /home/A/B

1. access home directory in natilus
2. double click A
3. double click B
4. click the button presents folder A
5. have folder B deleted


Actual results:
 you can find the button presents folder B is still under toolbar.

Expected results:
 the button presents folder B disappears.

Does this happen every time?
yes

Other information: