Matter Server 8.5.0: Enabling BLE Proxy Causes Crash on Start

[thingythekid]

Describe the issue you are experiencing

When I try and run the Matter Server with the "Enable BLE proxy" option enabled, it crashes with the following log:

usage: matter-server [-h] [--vendorid VENDORID] [--fabricid FABRICID]
                     [--storage-path STORAGE_PATH] [--port PORT]
                     [--listen-address LISTEN_ADDRESS] [--log-level LOG_LEVEL]
                     [--log-level-sdk LOG_LEVEL_SDK] [--log-file LOG_FILE]
                     [--primary-interface PRIMARY_INTERFACE]
                     [--paa-root-cert-dir PAA_ROOT_CERT_DIR]
                     [--enable-test-net-dcl]
                     [--bluetooth-adapter BLUETOOTH_ADAPTER]
                     [--log-node-ids LOG_NODE_IDS [LOG_NODE_IDS ...]]
                     [--ota-provider-dir OTA_PROVIDER_DIR]
                     [--disable-server-interactions]
matter-server: error: unrecognized arguments: --ble-proxy
[20:12:31] WARNING: matter-server service exited with code 2 (by signal 0).

Reinstalling the App fresh doesn't help, whether I delete the App data or not, it just un-pairs all my Matter devices with no warning. Good job I had a backup.

What type of installation are you running?

Home Assistant OS

Which operating system are you running on?

Home Assistant Operating System

Which app are you reporting an issue with?

Matter Server

What is the version of the app?

8.5.0

Steps to reproduce the issue

1. Install the Addon
2. Enable BLE Proxy
3. Observe the faliure to start

System Health information

System Information

version	core-2026.6.2
installation_type	Home Assistant OS
dev	false
hassio	true
docker	true
container_arch	amd64
user	root
virtualenv	false
python_version	3.14.5
os_name	Linux
os_version	6.12.85-haos
arch	x86_64
timezone	Europe/London
config_dir	/config

Home Assistant Community Store

GitHub API	ok
GitHub Content	ok
GitHub Web	ok
HACS Data	ok
GitHub API Calls Remaining	5000
Installed Version	2.0.5
Stage	running
Available Repositories	3121
Downloaded Repositories	4

Home Assistant Cloud

logged_in	false
can_reach_cert_server	ok
can_reach_cloud_auth	ok
can_reach_cloud	ok

Home Assistant Supervisor

host_os	Home Assistant OS 17.3
update_channel	stable
supervisor_version	supervisor-2026.05.1
agent_version	1.8.1
docker_version	29.3.1
disk_total	60.3 GB
disk_used	20.3 GB
nameservers	2a02:390:67b7:0:be24:11ff:fecb:a539, 192.168.1.1
healthy	true
supported	true
host_connectivity	true
supervisor_connectivity	true
ntp_synchronized	true
virtualization	kvm
board	ova
supervisor_api	ok
version_api	ok
installed_addons	Let's Encrypt (6.3.2), Advanced SSH & Web Terminal (23.0.9), Mosquitto broker (6.5.2), Zigbee2MQTT (2.9.0-1), Get HACS (1.3.1), OpenThread Border Router (3.0.1), Whisper (3.1.0), Piper (2.2.2), Everything Presence Zone Configurator (2.2.2), Matter Server (8.5.0)

Dashboards

dashboards	3
resources	1
views	1
mode	storage

Recorder

oldest_recorder_run	23 April 2026 at 21:05
current_recorder_run	10 June 2026 at 21:11
estimated_db_size	354.36 MiB
database_engine	sqlite
database_version	3.49.2

Anything in the Supervisor logs that might be useful for us?

Anything in the app logs that might be useful for us?

-----------------------------------------------------------
 Add-on: Matter Server
 Matter WebSocket Server for Home Assistant Matter support.
-----------------------------------------------------------
 Add-on version: 8.5.0
 You are running the latest version of this add-on.
 System: Home Assistant OS 17.3  (amd64 / qemux86-64)
 Home Assistant Core: 2026.6.2
 Home Assistant Supervisor: 2026.05.1
-----------------------------------------------------------
 Please, share the above information when looking for help
 or support in, e.g., GitHub, forums or the Discord chat.
-----------------------------------------------------------
s6-rc: info: service banner successfully started
s6-rc: info: service matter-server: starting
s6-rc: info: service matter-server successfully started
s6-rc: info: service legacy-services: starting
[21:13:08] INFO: Starting Matter Server...
s6-rc: info: service legacy-services successfully started
[21:13:09] INFO: Using Python Matter Server
[21:13:09] INFO: Using 'enp6s18' as primary network interface.
[21:13:09] INFO: Successfully send discovery information to Home Assistant.
usage: matter-server [-h] [--vendorid VENDORID] [--fabricid FABRICID]
                     [--storage-path STORAGE_PATH] [--port PORT]
                     [--listen-address LISTEN_ADDRESS] [--log-level LOG_LEVEL]
                     [--log-level-sdk LOG_LEVEL_SDK] [--log-file LOG_FILE]
                     [--primary-interface PRIMARY_INTERFACE]
                     [--paa-root-cert-dir PAA_ROOT_CERT_DIR]
                     [--enable-test-net-dcl]
                     [--bluetooth-adapter BLUETOOTH_ADAPTER]
                     [--log-node-ids LOG_NODE_IDS [LOG_NODE_IDS ...]]
                     [--ota-provider-dir OTA_PROVIDER_DIR]
                     [--disable-server-interactions]
matter-server: error: unrecognized arguments: --ble-proxy
[20:13:11] WARNING: matter-server service exited with code 2 (by signal 0).
s6-rc: info: service legacy-services: stopping
s6-rc: info: service legacy-services successfully stopped
s6-rc: info: service legacy-cont-init: stopping
s6-rc: info: service matter-server: stopping
s6-rc: info: service matter-server successfully stopped
s6-rc: info: service banner: stopping
s6-rc: info: service banner successfully stopped
s6-rc: info: service legacy-cont-init successfully stopped
s6-rc: info: service fix-attrs: stopping
s6-rc: info: service fix-attrs successfully stopped
s6-rc: info: service s6rc-oneshot-runner: stopping
s6-rc: info: service s6rc-oneshot-runner successfully stopped

Additional information

No response