core: Zha "EZSP is not running" error

The problem

Zha regularly drops to “initialising” state while using a Sonoff ZBDonlge E. This causes all of my zigbee devices to become unavailable and unusable. The only recovery I have found is reboot the home assistant setup

What version of Home Assistant Core has the issue?

2024.1.2

What was the last working version of Home Assistant Core?

No response

What type of installation are you running?

Home Assistant OS

Integration causing the issue

Zigbee Home Automation

Link to integration documentation on our website

https://www.home-assistant.io/integrations/zha/

Diagnostics information

No response

Example YAML snippet

No response

Anything in the logs that might be useful for us?

2024-01-09 14:16:49.719 DEBUG (MainThread) [zigpy.application] Feeding watchdog
2024-01-09 14:16:49.720 DEBUG (MainThread) [bellows.ezsp] Couldn't send command readCounters(()). EZSP is not running
2024-01-09 14:16:49.720 WARNING (MainThread) [bellows.zigbee.application] Watchdog heartbeat timeout: EzspError('EZSP is not running')
2024-01-09 14:16:49.721 WARNING (MainThread) [zigpy.application] Watchdog failure
Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/zigpy/application.py", line 665, in _watchdog_loop
    await self.watchdog_feed()
  File "/usr/local/lib/python3.11/site-packages/zigpy/application.py", line 647, in watchdog_feed
    await self._watchdog_feed()
  File "/usr/local/lib/python3.11/site-packages/bellows/zigbee/application.py", line 999, in _watchdog_feed
    (res,) = await self._ezsp.readCounters()
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/bellows/ezsp/__init__.py", line 212, in _command
    raise EzspError("EZSP is not running")
bellows.exception.EzspError: EZSP is not running
2024-01-09 14:16:49.739 DEBUG (MainThread) [zigpy.application] Connection to the radio has been lost: EzspError('EZSP is not running')
2024-01-09 14:16:49.745 DEBUG (MainThread) [zigpy.application] Stopping watchdog loop

Additional information

Unknown if ever working. I have not had this ever working. I am aware that the sonoff P dongle is reported to have issues but the newer E dongle uses a whole new chip and stack. I have seen reports of the ZBBridge having issues.

The setup is a RPI 3B+ with default RPI PSU. I have tested the dongle connected directly to the serial bus and through a 1 m extension. The RPI is using wifi to connect to the network.