diff --git a/.github/workflows/app-tests.yaml b/.github/workflows/app-tests.yaml
index c1c14bd1..b99cc962 100755
--- a/.github/workflows/app-tests.yaml
+++ b/.github/workflows/app-tests.yaml
@@ -76,7 +76,6 @@ jobs:
           run: python3 -m pytest -s -vv --cov --cov-fail-under=85
         - name: Run E2E tests with Playwright
           id: e2e
-          if: runner.os != 'Windows'
           run: |
             playwright install chromium --with-deps
             python3 -m pytest tests/e2e.py --tracing=retain-on-failure
diff --git a/tests/conftest.py b/tests/conftest.py
index 6dffdb5b..d53ee24e 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -43,7 +43,10 @@ def monkeypatch_session():
 @pytest.fixture(scope="session")
 def mock_session_env(monkeypatch_session):
     """Mock the environment variables for testing."""
-    with mock.patch.dict(os.environ, clear=True):
+    # Note that this does *not* clear existing env variables by default-
+    # we used to specify clear=True but this caused issues with Playwright tests
+    # https://github.com/microsoft/playwright-python/issues/2506
+    with mock.patch.dict(os.environ):
         # Database
         monkeypatch_session.setenv("POSTGRES_HOST", POSTGRES_HOST)
         monkeypatch_session.setenv("POSTGRES_USERNAME", POSTGRES_USERNAME)