Can't disable permissions of parent folder in Plone

Question

In the Sharing-Setup of my folders and contents, I can't remove the permissions of the parent folder. When I untick the box and press save, it seems to load something but when I reload the sharing page, the box is ticked again.

Answer 1

I solved the problem by updating to Plone version 4.3.2.

There was an error in file plone/app/workflow/browser/sharing.py as described on this GitHub page.

Thanks for your help guys!