Description of problem:
Automaticaly created Btrfs layout, went to custom mode, then just simply switched between partitions. No changes.
The following was filed automatically by anaconda:
anaconda 19.23-1 exception report
Traceback (most recent call first):
  File "/usr/lib/python2.7/site-packages/blivet/devicefactory.py", line 1175, in __init__
    super(BTRFSFactory, self).__init__(storage, size, disks, **kwargs)
  File "/usr/lib/python2.7/site-packages/blivet/devicefactory.py", line 97, in get_device_factory
    return factory_class(blivet, size, disks, **kwargs)
  File "/usr/lib/python2.7/site-packages/blivet/__init__.py", line 1875, in factoryDevice
    **kwargs)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 957, in _replace_device
    new_device = self.__storage.factoryDevice(*args, **kwargs)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 1237, in _save_right_side
    selector=selector)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 2231, in _save_current_selector
    self._save_right_side(self._current_selector)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 2241, in on_selector_clicked
    self._save_current_selector()
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/lib/accordion.py", line 220, in _onSelectorClicked
    cb(selector)
TypeError: __init__() got an unexpected keyword argument 'container_raid_level'

Version-Release number of selected component:
anaconda-19.23-1

Additional info:
cmdline:        /usr/bin/python  /sbin/anaconda
cmdline_file:   inst.repo=nfs:nfs.englab.brq.redhat.com:/pub/fedora/fedora-alt/stage/19-Beta-TC2/Fedora/x86_64/iso/Fedora-19-Beta-TC2-x86_64-DVD.iso initrd=F19/Beta-TC2/x86_64/initrd.img BOOT_IMAGE=F19/Beta-TC2/x86_64/vmlinuz 
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         3.9.0-0.rc8.git0.2.fc19.x86_64
product:        Fedora
release:        Cannot get release name.
type:           anaconda
version:        19-Beta-TC2

Truncated backtrace:
Traceback (most recent call last):
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/lib/accordion.py", line 220, in _onSelectorClicked
    cb(selector)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 2241, in on_selector_clicked
    self._save_current_selector()
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 2231, in _save_current_selector
    self._save_right_side(self._current_selector)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 1237, in _save_right_side
    selector=selector)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 957, in _replace_device
    new_device = self.__storage.factoryDevice(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/blivet/__init__.py", line 1875, in factoryDevice
    **kwargs)
  File "/usr/lib/python2.7/site-packages/blivet/devicefactory.py", line 97, in get_device_factory
    return factory_class(blivet, size, disks, **kwargs)
  File "/usr/lib/python2.7/site-packages/blivet/devicefactory.py", line 1175, in __init__
    super(BTRFSFactory, self).__init__(storage, size, disks, **kwargs)
TypeError: __init__() got an unexpected keyword argument 'container_raid_level'