Using kinetic daily subiquity crashes if trying to edit LVM volume to change size (on s390x)

While testing LP#1986551 (which worked fine and is solved) I ran into a new problem while trying to increase the size of an LVM volume.
By default only half of the size of an LVM is allocated (which I don't like, but that's a different story).
So I almost all the time modify the logical volume size to it's max.
But with the kinetic daily from today (Sept 1st, pending) subiquity crashes at that stage:

That is one screen prior to the crash:

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  Guided storage configuration [ Help ]
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  Configure a guided storage layout, or create a custom one:

  (X) Use an entire disk ▴
                                                                             █
       [ 0x6005076306 multipath device 64.000G ▾ ]█
         ffd6b6000000 █
         0000002603 █
                                                                             █
       [X] Set up this disk as an LVM group █
                                                                             █
            [ ] Encrypt the LVM group with LUKS █
                                                                             █
                         Passphrase: █
                                                                             █

                 Confirm passphrase:
                                                                             ▾

                                 [ Done ]
                                 [ Back ]

This is the screen where the crash happens:

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  Storage configuration [ Help ]
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  FILE SYSTEM SUMMARY ▴
                                                                             █
    MOUNT POINT SIZE TYPE DEVICE TYPE █
  [ / 30.996G new ext4 new LVM logical volume ▸ ] █
  [ /boot 2.000G new ext4 new partition of multipath device ▸ ] █
                                                                             █
                                                                             █
  AVAILABLE DEVICES █
                                                                             █
    DEVICE TYPE SIZE
  [ ubuntu-vg (new) LVM volume group 61.996G ▸ ]
    free space 31.000G ▸

  [ Create software RAID (md) ▸ ]
  [ Create volume group (LVM) ▸ ]
                                                                             ▾

                                 [ Done ]
                                 [ Reset ]
                                 [ Back ]

I scroll down:

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  Storage configuration [ Help ]
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                                                                             ▴
  [ Create software RAID (md) ▸ ]
  [ Create volume group (LVM) ▸ ]

  USED DEVICES

    DEVICE TYPE SIZE
  [ ubuntu-vg (new) LVM volume group 61.996G ▸ ]
    ubuntu-lv new, to be formatted as ext4, mounted at / 30.996G ▸

  [ 0x6005076306ffd6b60000000000002603 multipath device 64.000G ▸ ]
    partition 1 new, to be formatted as ext4, mounted at 2.000G ▸
                 /boot
    partition 2 new, PV of LVM volume group ubuntu-vg 61.998G ▸ █
                                                                             ▾

                                 [ Done ]
                                 [ Reset ]
                                 [ Back ]

I'll navigate to the line:
"ubuntu-lv new, to be formatted as ext4, mounted at / 30.996G"
select "Edit"
and immediately hit the crash:

generating crash report
report saved to /var/crash/1662024939.554034948.ui.crash
Traceback (most recent call last):
  File "/snap/subiquity/3799/usr/lib/python3.8/runpy.py", line 194, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/snap/subiquity/3799/usr/lib/python3.8/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "/snap/subiquity/3799/lib/python3.8/site-packages/subiquity/__main__.py", line 5, in <module>
    sys.exit(main())
  File "/snap/subiquity/3799/lib/python3.8/site-packages/subiquity/cmd/tui.py", line 150, in main
    subiquity_interface.run()
  File "/snap/subiquity/3799/lib/python3.8/site-packages/subiquity/client/client.py", line 407, in run
    super().run()
  File "/snap/subiquity/3799/lib/python3.8/site-packages/subiquitycore/tui.py", line 381, in run
    super().run()
  File "/snap/subiquity/3799/lib/python3.8/site-packages/subiquitycore/core.py", line 135, in run
    raise exc
  File "/snap/subiquity/3799/usr/lib/python3.8/asyncio/events.py", line 81, in _run
    self._context.run(self._callback, *self._args)
  File "/snap/subiquity/3799/lib/python3.8/site-packages/urwid/raw_display.py", line 416, in <lambda>
    wrapper = lambda: self.parse_input(
  File "/snap/subiquity/3799/lib/python3.8/site-packages/urwid/raw_display.py", line 515, in parse_input
    callback(processed, processed_codes)
  File "/snap/subiquity/3799/lib/python3.8/site-packages/urwid/main_loop.py", line 412, in _update
    self.process_input(keys)
  File "/snap/subiquity/3799/lib/python3.8/site-packages/urwid/main_loop.py", line 513, in process_input
    k = self._topmost_widget.keypress(self.screen_size, k)
  File "/snap/subiquity/3799/lib/python3.8/site-packages/urwid/wimp.py", line 651, in keypress
    return self._current_widget.keypress(size, key)
  File "/snap/subiquity/3799/lib/python3.8/site-packages/urwid/container.py", line 598, in keypress
    return self.top_w.keypress(self.top_w_size(size,
  File "/snap/subiquity/3799/lib/python3.8/site-packages/subiquitycore/ui/actionmenu.py", line 104, in keypress
    return super().keypress(size, key)
  File "/snap/subiquity/3799/lib/python3.8/site-packages/urwid/container.py", line 1626, in keypress
    key = self.focus.keypress(tsize, key)
  File "/snap/subiquity/3799/lib/python3.8/site-packages/urwid/container.py", line 2316, in keypress
    key = w.keypress((mc,) + size[1:], key)
  File "/snap/subiquity/3799/lib/python3.8/site-packages/subiquitycore/ui/container.py", line 447, in keypress
    return lb.keypress(size, key)
  File "/snap/subiquity/3799/lib/python3.8/site-packages/subiquitycore/ui/container.py", line 321, in keypress
    upkey = super().keypress(size, downkey)
  File "/snap/subiquity/3799/lib/python3.8/site-packages/urwid/listbox.py", line 968, in keypress
    key = focus_widget.keypress((maxcol,),key)
  File "/snap/subiquity/3799/lib/python3.8/site-packages/urwid/wimp.py", line 543, in keypress
    self._emit('click')
  File "/snap/subiquity/3799/lib/python3.8/site-packages/urwid/widget.py", line 461, in _emit
    signals.emit_signal(self, name, self, *args)
  File "/snap/subiquity/3799/lib/python3.8/site-packages/urwid/signals.py", line 265, in emit
    result |= self._call_callback(callback, user_arg, user_args, args)
  File "/snap/subiquity/3799/lib/python3.8/site-packages/urwid/signals.py", line 295, in _call_callback
    return bool(callback(*args_to_pass))
  File "/snap/subiquity/3799/lib/python3.8/site-packages/subiquitycore/ui/actionmenu.py", line 97, in click
    self.parent._action(value)
  File "/snap/subiquity/3799/lib/python3.8/site-packages/subiquitycore/ui/actionmenu.py", line 143, in _action
    self._emit("action", action)
  File "/snap/subiquity/3799/lib/python3.8/site-packages/urwid/widget.py", line 461, in _emit
    signals.emit_signal(self, name, self, *args)
  File "/snap/subiquity/3799/lib/python3.8/site-packages/urwid/signals.py", line 265, in emit
    result |= self._call_callback(callback, user_arg, user_args, args)
  File "/snap/subiquity/3799/lib/python3.8/site-packages/urwid/signals.py", line 295, in _call_callback
    return bool(callback(*args_to_pass))
  File "/snap/subiquity/3799/lib/python3.8/site-packages/subiquity/ui/views/filesystem/filesystem.py", line 321, in _action
    meth(device)
  File "/snap/subiquity/3799/lib/python3.8/site-packages/subiquity/ui/views/filesystem/filesystem.py", line 214, in impl
    self.parent.show_stretchy_overlay(cls(self.parent, device))
  File "/snap/subiquity/3799/lib/python3.8/site-packages/subiquity/ui/views/filesystem/filesystem.py", line 311, in <lambda>
    lambda parent, part: PartitionStretchy(parent, part.volgroup,
  File "/snap/subiquity/3799/lib/python3.8/site-packages/subiquity/ui/views/filesystem/partition.py", line 398, in __init__
    gaps.movable_trailing_partitions_and_gap_size(partition)[1]
  File "/snap/subiquity/3799/lib/python3.8/site-packages/subiquity/common/filesystem/gaps.py", line 244, in movable_trailing_partitions_and_gap_size
    pgs = parts_and_gaps(partition.device)
AttributeError: 'LVM_LogicalVolume' object has no attribute 'device'
Connection to s1lp15 closed.

While continuing with the installation I repeatedly run into this crash - one will notice 3 crash files in the attached tgz that contains the /var/crash and /var/log content.