HASS 2026.3.4 -> 2026.4.0 Upgrade breaks ZHA with ZBT-2

[homemagicuser]

The problem

Installation method: Home Assistant OS
Core: 2026.4.0
Supervisor: 2026.03.2
Operating System: 17.1
Frontend: 20260325.5

Issue:

After upgrading to latest HASS 2026.4.0 my ZHA integration (ZBT-2) doesn't work anymore.
Looking at Settings -> Integrations -> Zigbee Home Automation, ZHA shows "Failed to set up".
This functioned flawlessly before the upgrade.

What version of Home Assistant Core has the issue?

core-2026.4.0

What was the last working version of Home Assistant Core?

core-2026.3.4

What type of installation are you running?

Home Assistant OS

Integration causing the issue

Zigbee Home Automation

Link to integration documentation on our website

No response

Diagnostics information

No response

Example YAML snippet

Anything in the logs that might be useful for us?

Logger: homeassistant.config_entries
Source: config_entries.py:769
First occurred: April 2, 2026 at 3:14:32 PM (2 occurrences)
Last logged: April 2, 2026 at 4:55:53 PM

Error setting up entry Home Assistant Connect ZBT-2 for zha
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/config_entries.py", line 769, in __async_setup_with_context
    result = await component.async_setup_entry(hass, self)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/zha/__init__.py", line 157, in async_setup_entry
    zha_gateway = await Gateway.async_from_config(zha_lib_data)
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.14/site-packages/zha/application/gateway.py", line 238, in async_from_config
    await instance.async_add_executor_job(
    ...<2 lines>...
    )
  File "/usr/local/lib/python3.14/concurrent/futures/thread.py", line 86, in run
    result = ctx.run(self.task)
  File "/usr/local/lib/python3.14/concurrent/futures/thread.py", line 73, in run
    return fn(*args, **kwargs)
  File "/usr/local/lib/python3.14/site-packages/zhaquirks/__init__.py", line 523, in setup
    importlib.import_module(modname)
    ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/util/loop.py", line 201, in protected_loop_func
    return func(*args, **kwargs)
  File "/usr/local/lib/python3.14/importlib/__init__.py", line 88, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1398, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1371, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1342, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 938, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 755, in exec_module
  File "<frozen importlib._bootstrap_external>", line 893, in get_code
  File "<frozen importlib._bootstrap_external>", line 823, in source_to_code
  File "<frozen importlib._bootstrap>", line 491, in _call_with_frames_removed
  File "/usr/local/lib/python3.14/site-packages/zhaquirks/tuya/ts0043.py", line 185
    },
    ^
SyntaxError: closing parenthesis '}' does not match opening parenthesis '[' on line 178

Additional information

No response

[home-assistant]

Hey there @dmulcahey, @Adminiuga, @puddly, @TheJulianJES, mind taking a look at this issue as it has been labeled with an integration (zha) you are listed as a code owner for? Thanks!

Code owner commands

Code owners of zha can trigger bot actions by commenting:

• @home-assistant close Closes the issue.
• @home-assistant rename Awesome new title Renames the issue.
• @home-assistant reopen Reopen the issue.
• @home-assistant unassign zha Removes the current integration label and assignees on the issue, add the integration domain after the command.
• @home-assistant add-label needs-more-information Add a label (needs-more-information, problem in dependency, problem in custom component, problem in config, problem in device, feature-request) to the issue.
• @home-assistant remove-label needs-more-information Remove a label (needs-more-information, problem in dependency, problem in custom component, problem in config, problem in device, feature-request) on the issue.

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@homemagicuser Thanks for reporting this issue!

Before we dive in, please make sure this isn't a duplicate by searching through existing issues. Also check recently closed issues, as your problem might already be fixed but not yet released.

https://github.com/home-assistant/core/issues?q=%20label%3A%22integration%3A%20zha%22%20
To help us troubleshoot, please include the following information in your report:

1. Please enable ZHA debug logging, let it run for 10-15 minutes, and make sure to capture whatever problem you're having in the debug log.
2. Download diagnostics JSON for the ZHA Integration for the specific devices you're having problems with.
3. Any issues whatsoever with Tuya devices or device support requests in general need to be made in the ZHA quirks repo https://github.com/zigpy/zha-device-handlers/issues, not Core's issue tracker.
4. Fill out the issue template and include whether or not you're using a VM/Proxmox with USB passthrough, what addons you have installed, and so on.

ZHA does not have low-level control over your network, the mesh is self-organizing. If you started having network issues in a specific release, the release probably didn't cause the issue. Check your environment for new sources of 2.4GHz interference and make sure you're using an extension cable, not placing the coordinator near SSDs and USB 3.0 ports, etc. Just because things worked in the past with a bad setup doesn't mean they'll keep working in the future.
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zha documentation
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