Description of problem:
Connect a bluetooth headset that used to work before (CX 350 in this case).

Version-Release number of selected component:
blueman-1:2.3.5-8.fc39

Additional info:
reporter:       libreport-2.17.11
type:           Python3
exception_type: KeyError
executable:     /usr/bin/blueman-applet
package:        blueman-1:2.3.5-8.fc39
crash_function: _on_battery_property_changed
comment:        Connect a bluetooth headset that used to work before (CX 350 in this case).
interpreter:    python3-3.12.2-2.fc39.x86_64
cmdline:        /usr/bin/python3 -sPE /usr/bin/blueman-applet
runlevel:       N 5
reason:         ConnectionNotifier.py:57:_on_battery_property_changed:KeyError: '/org/bluez/hci0/dev_00_1B_66_C3_37_D7'
uid:            1000
cgroup:         0::/user.slice/user-1000.slice/session-3.scope
kernel:         6.8.4-200.fc39.x86_64

Truncated backtrace:
ConnectionNotifier.py:57:_on_battery_property_changed:KeyError: '/org/bluez/hci0/dev_00_1B_66_C3_37_D7'

Traceback (most recent call last):
  File "/usr/lib/python3.12/site-packages/blueman/plugins/applet/ConnectionNotifier.py", line 53, in _on_battery_created
    self._on_battery_property_changed(battery, "Percentage", battery["Percentage"], obj_path)
  File "/usr/lib/python3.12/site-packages/blueman/plugins/applet/ConnectionNotifier.py", line 57, in _on_battery_property_changed
    notification = self._notifications[path]
                   ~~~~~~~~~~~~~~~~~~~^^^^^^
KeyError: '/org/bluez/hci0/dev_00_1B_66_C3_37_D7'

Local variables in innermost frame:
self: <blueman.plugins.applet.ConnectionNotifier.ConnectionNotifier object at 0x7f43d7a3b0e0>
_battery: <Battery.Battery object at 0x7f43cff5cb00 (blueman+bluez+Battery+Battery at 0x563b9a9aefc0)>
key: 'Percentage'
value: 100
path: '/org/bluez/hci0/dev_00_1B_66_C3_37_D7'