Disabling 'warnings' plugin also disables config time warnings

src/_pytest/config/__init__.py

@@ -1235,6 +1235,8 @@ def issue_config_time_warning(self, warning: Warning, stacklevel: int) -> None:
         :param warning: The warning instance.
         :param stacklevel: stacklevel forwarded to warnings.warn.
         """
+        if self.pluginmanager.is_blocked("warnings"):
+            return
 
         cmdline_filters = self.known_args_namespace.pythonwarnings or []
         config_filters = self.getini("filterwarnings")

testing/test_config.py

@@ -275,6 +275,24 @@ def test_silence_unknown_key_warning(self, testdir: Testdir) -> None:
         result = testdir.runpytest()
         result.stdout.no_fnmatch_line("*PytestConfigWarning*")
 
+    @pytest.mark.filterwarnings("default")
+    def test_disable_warnings_plugin_disables_config_warnings(
+        self, testdir: Testdir
+    ) -> None:
+        """Disabling 'warnings' plugin also disables config time warnings"""
+        testdir.makeconftest(
+            """
+            import pytest
+            def pytest_configure(config):
+                config.issue_config_time_warning(
+                    pytest.PytestConfigWarning("custom config warning"),
+                    stacklevel=2,
+                )
+        """
+        )
+        result = testdir.runpytest("-pno:warnings")
+        result.stdout.no_fnmatch_line("*PytestConfigWarning*")
+
     @pytest.mark.parametrize(
         "ini_file_text, exception_text",
         [