pythonnet · lostmsu · Sep 22, 2021 · Sep 22, 2021
diff --git a/src/embed_tests/pyinitialize.cs b/src/embed_tests/pyinitialize.cs
@@ -46,6 +46,22 @@ public static void LoadSpecificArgs()
            }
        }

+        // regression test for https://github.com/pythonnet/pythonnet/issues/1561
+        [Test]
+        public void ImportClassShutdownRefcount()
+        {
+            PythonEngine.Initialize();
+
+            PyObject ns = Py.Import(typeof(ImportClassShutdownRefcountClass).Namespace);
+            PyObject cls = ns.GetAttr(nameof(ImportClassShutdownRefcountClass));
+            ns.Dispose();
+
+            Assert.Less(cls.Refcount, 256);
+
+            PythonEngine.Shutdown();
+            Assert.Greater(cls.Refcount, 0);
+        }
+
        /// <summary>
        /// Failing test demonstrating current issue with OverflowException (#376)
        /// and ArgumentException issue after that one is fixed.
@@ -182,4 +198,6 @@ public static void TestRunExitFuncs()
            Assert.True(called);
        }
    }
+
+    public class ImportClassShutdownRefcountClass { }
 }
diff --git a/src/runtime/classmanager.cs b/src/runtime/classmanager.cs
@@ -67,7 +67,6 @@ internal static void DisposePythonWrappersForClrTypes()
                    // since others may still referencing it.
                    cls.CallTypeTraverse(TraverseTypeClear, visitedPtr);
                    cls.CallTypeClear();
-                    cls.DecrRefCount();
                }
            }
            finally