diff --git a/tests/fuzzer/testcases/failing/2.json b/tests/fuzzer/testcases/failing/2.json
new file mode 100644
index 00000000..b98030a5
--- /dev/null
+++ b/tests/fuzzer/testcases/failing/2.json
@@ -0,0 +1,159 @@
+{
+    "initialLayout": {
+        "dockWidgets": [
+            {
+                "geometry": {
+                    "size": {
+                        "height": 976,
+                        "width": 1087
+                    },
+                    "x": 298,
+                    "y": 13
+                },
+                "isFloating": false,
+                "isVisible": false,
+                "minSize": {
+                    "height": 447,
+                    "width": 498
+                },
+                "name": "DockWidget-4322"
+            },
+            {
+                "geometry": {
+                    "size": {
+                        "height": 793,
+                        "width": 897
+                    },
+                    "x": 322,
+                    "y": 491
+                },
+                "isFloating": false,
+                "isVisible": false,
+                "minSize": {
+                    "height": 565,
+                    "width": 544
+                },
+                "name": "DockWidget-4323"
+            },
+            {
+                "geometry": {
+                    "size": {
+                        "height": 426,
+                        "width": 972
+                    },
+                    "x": 54,
+                    "y": 88
+                },
+                "isFloating": true,
+                "isVisible": true,
+                "minSize": {
+                    "height": 284,
+                    "width": 596
+                },
+                "name": "DockWidget-4324"
+            }
+        ],
+        "mainWindows": [
+            {
+                "geometry": {
+                    "size": {
+                        "height": 1425,
+                        "width": 145
+                    },
+                    "x": 20,
+                    "y": 2
+                },
+                "mainWindowOption": 0,
+                "name": "MainWindow-794"
+            }
+        ]
+    },
+    "operations": [
+        {
+            "comment": "AddDockWidget DockWidget-4323-[hidden] to top",
+            "params": {
+                "addingOption": 0,
+                "dockWidgetName": "DockWidget-4323",
+                "location": 2,
+                "mainWindowName": "MainWindow-794"
+            },
+            "type": 4
+        },
+        {
+            "comment": "Closing DockWidget-4323",
+            "params": {
+                "dockWidgetName": "DockWidget-4323"
+            },
+            "type": 1
+        },
+        {
+            "comment": "AddDockWidget DockWidget-4324 to left",
+            "params": {
+                "addingOption": 0,
+                "dockWidgetName": "DockWidget-4324",
+                "location": 1,
+                "mainWindowName": "MainWindow-794"
+            },
+            "type": 4
+        },
+        {
+            "comment": "AddDockWidget DockWidget-4324 to right",
+            "params": {
+                "addingOption": 0,
+                "dockWidgetName": "DockWidget-4324",
+                "location": 3,
+                "mainWindowName": "MainWindow-794"
+            },
+            "type": 4
+        },
+        {
+            "comment": "Closing DockWidget-4324",
+            "params": {
+                "dockWidgetName": "DockWidget-4324"
+            },
+            "type": 1
+        },
+        {
+            "comment": "AddDockWidget DockWidget-4324-[hidden] to left",
+            "params": {
+                "addingOption": 0,
+                "dockWidgetName": "DockWidget-4324",
+                "location": 1,
+                "mainWindowName": "MainWindow-794"
+            },
+            "type": 4
+        },
+        {
+            "comment": "AddDockWidget DockWidget-4322-[hidden] to top, relative to DockWidget-4324",
+            "params": {
+                "addingOption": 0,
+                "dockWidgetName": "DockWidget-4322",
+                "location": 2,
+                "mainWindowName": "MainWindow-794",
+                "relativeToName": "DockWidget-4324"
+            },
+            "type": 4
+        },
+        {
+            "comment": "Hidding DockWidget-4324",
+            "params": {
+                "dockWidgetName": "DockWidget-4324"
+            },
+            "type": 2
+        },
+        {
+            "comment": "Closing DockWidget-4322",
+            "params": {
+                "dockWidgetName": "DockWidget-4322"
+            },
+            "type": 1
+        },
+        {
+            "comment": "Showing DockWidget-4324-[hidden]",
+            "params": {
+                "dockWidgetName": "DockWidget-4324"
+            },
+            "type": 3
+        }
+    ]
+}