Description of problem:
I tried to create a small 200 MB partition at the beginning (first partition I wanted to create) on an 4TB NVMe drive.
For file system I chose: unformatted
For name I chose: future_boot_efi
I left Encrypt unchecked.

Version-Release number of selected component:
blivet-gui-runtime-2.6.0-1.fc41

Additional info:
reporter:       libreport-2.17.15
kernel:         6.13.6-200.fc41.x86_64
package:        blivet-gui-runtime-2.6.0-1.fc41
cmdline:        /usr/bin/python3 /usr/bin/blivet-gui
executable:     /usr/bin/blivet-gui
reason:         client.py:174:remote_call:KeyError: 'None\nTraceback (most recent call last):\n  File "/usr/lib/python3.13/site-packages/blivetgui/communication/server.py", line 317, in _call_utils_method\n    ret = utils_method(*args)\n  File "/usr/lib/python3.13/site-packages/blivetgui/blivet_utils.py", line 1345, in add_device\n    add_function = self.add_dict[user_input.device_type]\n                   ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^\nKeyError: None\n'
exception_type: KeyError
type:           Python3
crash_function: remote_call
uid:            1000
interpreter:    python3-3.13.2-1.fc41.x86_64
runlevel:       N 5

Truncated backtrace:
client.py:174:remote_call:KeyError: 'None\nTraceback (most recent call last):\n  File "/usr/lib/python3.13/site-packages/blivetgui/communication/server.py", line 317, in _call_utils_method\n    ret = utils_method(*args)\n  File "/usr/lib/python3.13/site-packages/blivetgui/blivet_utils.py", line 1345, in add_device\n    add_function = self.add_dict[user_input.device_type]\n                   ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^\nKeyError: None\n'

Traceback (most recent call last):
  File "/usr/lib/python3.13/site-packages/blivetgui/blivetgui.py", line 509, in add_device
    result = self.client.remote_call("add_device", user_input)
  File "/usr/lib/python3.13/site-packages/blivetgui/communication/client.py", line 174, in remote_call
    raise type(ret.exception)(str(ret.exception) + "\n" + ret.traceback)  # pylint: disable=maybe-no-member
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
KeyError: 'None\nTraceback (most recent call last):\n  File "/usr/lib/python3.13/site-packages/blivetgui/communication/server.py", line 317, in _call_utils_method\n    ret = utils_method(*args)\n  File "/usr/lib/python3.13/site-packages/blivetgui/blivet_utils.py", line 1345, in add_device\n    add_function = self.add_dict[user_input.device_type]\n                   ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^\nKeyError: None\n'

Local variables in innermost frame:
self: <blivetgui.communication.client.BlivetGUIClient object at 0x7f11c22eaf90>
method: 'add_device'
args: (ProxyDataContainer:
{'device_type': None, 'size_selection': ProxyDataContainer:
{'total_size': Size (200 MiB), 'parents': [ProxyDataContainer:
{'parent_device': <blivetgui.communication.client.ClientProxyObject object at 0x7f11c096ab10>, 'free_space': <blivetgui.communication.client.ClientProxyObject object at 0x7f11c0969eb0>, 'selected_size': Size (200 MiB)}]}, 'filesystem': None, 'name': 'future_boot_efi', 'label': '', 'mountpoint': None, 'encrypt': False, 'passphrase': '', 'encryption_type': 'luks2', 'encryption_sector_size': 0, 'raid_level': None, 'advanced': None},)
pickled_data: b'\x80\x04\x95\xef\x01\x00\x00\x00\x00\x00\x00\x8c\x04call\x94\x8c\nadd_device\x94]\x94\x8c#blivetgui.communication.proxy_utils\x94\x8c\x12ProxyDataContainer\x94\x93\x94)\x81\x94}\x94\x8c\x06kwargs\x94}\x94(\x8c\x0bdevice_type\x94N\x8c\x0esize_selection\x94h\x05)\x81\x94}\x94h\x08}\x94(\x8c\ntotal_size\x94\x8c\x0bblivet.size\x94\x8c\x04Size\x94\x93\x94J\x00\x00\x80\x0c\x85\x94R\x94\x8c\x07parents\x94]\x94h\x05)\x81\x94}\x94h\x08}\x94(\x8c\rparent_device\x94h\x03\x8c\x07ProxyID\x94\x93\x94)\x81\x94}\x94\x8c\x02id\x94M$\x0csb\x8c\nfree_space\x94h\x1c)\x81\x94}\x94h\x1fM\x05\x0csb\x8c\rselected_size\x94h\x12J\x00\x00\x80\x0c\x85\x94R\x94usbausb\x8c\nfilesystem\x94N\x8c\x04name\x94\x8c\x0ffuture_boot_efi\x94\x8c\x05label\x94\x8c\x00\x94\x8c\nmountpoint\x94N\x8c\x07encrypt\x94\x89\x8c\npassphrase\x94h*\x8c\x0fencryption_type\x94\x8c\x05luks2\x94\x8c\x16encryption_sector_size\x94K\x00\x8c\nraid_level\x94N\x8c\x08advanced\x94Nusba\x87\x94.'
answer: 'Proxy ID, 3113'
ret: <blivetgui.communication.client.ClientProxyObject object at 0x7f11c096af90>