Merge branch 'dev' into master-3.1.1

Author: T4rk1n

.github/workflows/testing.yml

@@ -34,6 +34,8 @@ jobs:
               - 'dash/dash-renderer/**'
               - 'dash/_callback.py'
               - 'dash/_callback_context.py'
+              - 'tests/background_callback/**'
+              - 'tests/async_tests/**'
               - 'requirements/**'
 
   build:
@@ -263,6 +265,10 @@ jobs:
           cd bgtests
           touch __init__.py
           pytest --headless --nopercyfinalize tests/background_callback -v -s
+
+      - name: Run Async Callback Tests
+        run: |
+          cd bgtests
           pytest --headless --nopercyfinalize tests/async_tests -v -s
 
   table-unit:

CHANGELOG.md

@@ -2,6 +2,10 @@
 All notable changes to `dash` will be documented in this file.
 This project adheres to [Semantic Versioning](https://semver.org/).
 
+# [3.1.1] - 2025-06-29
+
+## Fixed
+[#3351](https://github.com/plotly/dash/pull/3351) Fix multi-page app with `suppress_callback_exceptions=True`
 
 ## [3.1.0] - 2025-06-27
 
@@ -20,6 +24,7 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 - [#3294](https://github.com/plotly/dash/pull/3294) Added the ability to pass `allow_optional` to Input and State to allow callbacks to work even if these components are not in the dash layout.
 - [#3077](https://github.com/plotly/dash/pull/3077) Add new parameter `assets_path_ignore` to `dash.Dash()`. Closes [#3076](https://github.com/plotly/dash/issues/3076)
 - [#3202](https://github.com/plotly/dash/pull/3202) expose the closeOnSelect option in dropdown component
+- [#3089](https://github.com/plotly/dash/pull/3089) adding support for async callbacks and page layouts, install with `pip install dash[async]`.
 
 ## Changed
 

dash/dash.py

@@ -2491,9 +2491,9 @@ def update(pathname_, search_, **states):
                 _validate.check_for_duplicate_pathnames(_pages.PAGE_REGISTRY)
                 _validate.validate_registry(_pages.PAGE_REGISTRY)
 
-                # Set validation_layout
-                if not self.config.suppress_callback_exceptions:
-                    layout = self.layout
+            # Set validation_layout
+            if not self.config.suppress_callback_exceptions:
+                layout = self.layout
                 if not isinstance(layout, list):
                     layout = [
                         # pylint: disable=not-callable

dash/version.py

@@ -1 +1 @@
-__version__ = "3.1.0"
+__version__ = "3.1.1"

tests/async_tests/test_async_callbacks.py

@@ -1,6 +1,8 @@
 import json
 import time
 
+import flaky
+
 from multiprocessing import Lock, Value
 import pytest
 
@@ -27,6 +29,7 @@
 from tests.utils import is_dash_async
 
 
+@flaky.flaky(max_runs=3)
 def test_async_cbsc001_simple_callback(dash_duo):
     if not is_dash_async():
         return