Permission toggle back and forward not updating

Hi - I initially had the Permissions toggle on Zephyr Scale disabled so there were no restrictions and I was able to create, edit, delete test cases, cycle, plans etc -  I switched on the toggle and started allocating some permissions to check it worked ok; then changed my mind and disabled the toggle again.  But when I disable it (back to original state) and go back to test cases, the add, save, delete options etc are now greyed out when they weren't before.

This was working fine until I switched that toggle on, but I even though I've disabled it, it still seems to be on.  Anyone any ideas?