When editing an existing role with a local admin, all the settings suddenly disappear in the ACL GUI when a wrong path is entered.

To reproduce:

• edit an existing (working) role as local admin
• switch to the ACL tab
• enter a path you don't have permissions for (e. g. / under website)
• try to save - an error message appears (correct)
• save again with the same path and the dialog is closed

• edit the role again and all the settings in the ACL tab are gone

=> the role still does work, even without the settings visible!