In the file/dir properties, you can set some file permissions. There's also the "Advanced permission" button, which gives access to setting some additional permissions. When some new entries are specified, they are set after saving the changes, but when you access the information after closing the properties window, it looks like that no advanced permissions were actually set.

Step to reproduce this bug:

- create a test/ folder, and see whether it has some ACLs set:
    $ mkdir test/
    $ chgrp p2p test/
    $ ls -al test/
    total 8
    drwxr-xr-x 2 morfik p2p    4096 2018-04-18 17:18:18 ./
    drwxr-xr-x 3 morfik morfik 4096 2018-04-18 17:18:18 ../
    $ getfacl test/
    # file: test
    # owner: morfik
    # group: p2p
    user::rwx
    group::r-x
    other::r-x

- go to the Advanced Permissions tab in Krusader and add some new permission entry.

- save the perms and close the dir properties window

- open the dir properties window again and check the advanced permissions -- it should present you with the default permissions ignoring the fact that you had just set something there.

- when you check the perms in a terminal, it will show you the permissions you had set. So the problem is mostly in presenting the right permission to the user. Moreover, when you click the "Advanced permission" button and simply press "OK" without committing any changes, the permissions are reset to defaults (or simply removed altogether). 

- also when you check the "default for new files in the folder" option, you can only add either "owner" or "owning group" -- you can't add both. There's also problem with removing such default entry when you added one by mistake.

-- Basically I just wanted to reproduce the following commands in the Krusader GUI:
    $ mkdir test/
    $ chgrp p2p test/
    $ setfacl -Rm g:p2p:rwX,d:g:p2p:rwX test/
    $ chmod g+s test/

Which gives the following perms:
    $ getfacl test
    # file: test
    # owner: morfik
    # group: p2p
    # flags: -s-
    user::rwx
    group::r-x
    group:p2p:rwx
    mask::rwx
    other::r-x
    default:user::rwx
    default:group::r-x
    default:group:p2p:rwx
    default:mask::rwx
    default:other::r-x

But it looks like there's lots of bugs concerning the advanced permissions in Krusader, and I wasn't able to set the perms in the way I wanted.