diff --git a/.github/trigger_files/beam_PostCommit_Python_ValidatesRunner_Samza.json b/.github/trigger_files/beam_PostCommit_Python_ValidatesRunner_Samza.json
index cdaa11075bdf..cccf60ad1fc6 100644
--- a/.github/trigger_files/beam_PostCommit_Python_ValidatesRunner_Samza.json
+++ b/.github/trigger_files/beam_PostCommit_Python_ValidatesRunner_Samza.json
@@ -1,3 +1,4 @@
 {
-  "https://github.com/apache/beam/pull/34830": "testing"
+  "https://github.com/apache/beam/pull/34830": "testing",
+  "https://github.com/apache/beam/issues/35429": "testing"
 }
diff --git a/.github/trigger_files/beam_PostCommit_Python_ValidatesRunner_Spark.json b/.github/trigger_files/beam_PostCommit_Python_ValidatesRunner_Spark.json
index cdaa11075bdf..cccf60ad1fc6 100644
--- a/.github/trigger_files/beam_PostCommit_Python_ValidatesRunner_Spark.json
+++ b/.github/trigger_files/beam_PostCommit_Python_ValidatesRunner_Spark.json
@@ -1,3 +1,4 @@
 {
-  "https://github.com/apache/beam/pull/34830": "testing"
+  "https://github.com/apache/beam/pull/34830": "testing",
+  "https://github.com/apache/beam/issues/35429": "testing"
 }
diff --git a/sdks/python/apache_beam/runners/portability/samza_runner_test.py b/sdks/python/apache_beam/runners/portability/samza_runner_test.py
index 6112a50e8511..cc8d947f054e 100644
--- a/sdks/python/apache_beam/runners/portability/samza_runner_test.py
+++ b/sdks/python/apache_beam/runners/portability/samza_runner_test.py
@@ -190,6 +190,9 @@ def test_custom_window_type(self):
   def test_reshuffle_after_custom_window(self):
     raise unittest.SkipTest("https://github.com/apache/beam/issues/34831")
 
+  def test_sliding_windows(self):
+    raise unittest.SkipTest("https://github.com/apache/beam/issues/35429")
+
 
 if __name__ == '__main__':
   # Run the tests.
diff --git a/sdks/python/apache_beam/runners/portability/spark_runner_test.py b/sdks/python/apache_beam/runners/portability/spark_runner_test.py
index cf6536be4c2d..fe7160d4e18b 100644
--- a/sdks/python/apache_beam/runners/portability/spark_runner_test.py
+++ b/sdks/python/apache_beam/runners/portability/spark_runner_test.py
@@ -191,6 +191,9 @@ def test_custom_merging_window(self):
   def test_custom_window_type(self):
     raise unittest.SkipTest("https://github.com/apache/beam/issues/20641")
 
+  def test_sliding_windows(self):
+    raise unittest.SkipTest("https://github.com/apache/beam/issues/35429")
+
   # Inherits all other tests from PortableRunnerTest.