diff --git a/avalon/tools/creator/app.py b/avalon/tools/creator/app.py
index 25c79c1d6..f67cb767a 100644
--- a/avalon/tools/creator/app.py
+++ b/avalon/tools/creator/app.py
@@ -555,37 +555,20 @@ def set_item(self, item):
 
 
 def show(debug=False, parent=None):
-    """Display asset creator GUI
+    """Display Asset Creator GUI
 
     Arguments:
-        debug (bool, optional): Run loader in debug-mode,
-            defaults to False
+        debug (bool, optional): Run loader in debug-mode, defaults to False
         parent (QtCore.QObject, optional): When provided parent the interface
             to this QObject.
 
     """
 
-    if module.window:
+    try:
         module.window.close()
-        del(module.window)
-
-    if debug:
-        from avalon import mock
-        for creator in mock.creators:
-            api.register_plugin(api.Creator, creator)
-
-        import traceback
-        sys.excepthook = lambda typ, val, tb: traceback.print_last()
-
-        io.install()
-
-        any_project = next(
-            project for project in io.projects()
-            if project.get("active", True) is not False
-        )
-
-        api.Session["AVALON_PROJECT"] = any_project["name"]
-        module.project = any_project["name"]
+        del module.window
+    except (RuntimeError, AttributeError):
+        pass
 
     with lib.application():
         window = Window(parent)
diff --git a/avalon/tools/loader/app.py b/avalon/tools/loader/app.py
index c3f5ca40f..94b71a4f1 100644
--- a/avalon/tools/loader/app.py
+++ b/avalon/tools/loader/app.py
@@ -388,37 +388,17 @@ def show(debug=False, parent=None, use_context=False):
     """Display Loader GUI
 
     Arguments:
-        debug (bool, optional): Run loader in debug-mode,
-            defaults to False
+        debug (bool, optional): Run loader in debug-mode, defaults to False
         parent (QtCore.QObject, optional): The Qt object to parent to.
         use_context (bool): Whether to apply the current context upon launch
 
     """
 
-    # Remember window
-    if module.window is not None:
-        try:
-            module.window.show()
-
-            # If the window is minimized then unminimize it.
-            if module.window.windowState() & QtCore.Qt.WindowMinimized:
-                module.window.setWindowState(QtCore.Qt.WindowActive)
-
-            # Raise and activate the window
-            module.window.raise_()             # for MacOS
-            module.window.activateWindow()     # for Windows
-            module.window.refresh()
-            return
-        except RuntimeError as exc:
-            if not str(exc).rstrip().endswith("already deleted."):
-                raise
-
-            # Garbage collected
-            module.window = None
-
-    if debug:
-        import traceback
-        sys.excepthook = lambda typ, val, tb: traceback.print_last()
+    try:
+        module.window.close()
+        del module.window
+    except (RuntimeError, AttributeError):
+        pass
 
     with lib.application():
 
diff --git a/avalon/tools/projectmanager/app.py b/avalon/tools/projectmanager/app.py
index 03069f5fc..ce8e465c4 100644
--- a/avalon/tools/projectmanager/app.py
+++ b/avalon/tools/projectmanager/app.py
@@ -243,8 +243,7 @@ def show(root=None, debug=False, parent=None):
     """Display Loader GUI
 
     Arguments:
-        debug (bool, optional): Run loader in debug-mode,
-            defaults to False
+        debug (bool, optional): Run loader in debug-mode, defaults to False
         parent (QtCore.QObject, optional): When provided parent the interface
             to this QObject.
 
@@ -256,9 +255,6 @@ def show(root=None, debug=False, parent=None):
     except (RuntimeError, AttributeError):
         pass
 
-    if debug is True:
-        io.install()
-
     with tools_lib.application():
         window = Window(parent=parent)
         window.show()
diff --git a/avalon/tools/sceneinventory/app.py b/avalon/tools/sceneinventory/app.py
index 984f0302f..c8faa0d04 100644
--- a/avalon/tools/sceneinventory/app.py
+++ b/avalon/tools/sceneinventory/app.py
@@ -927,8 +927,7 @@ def show(root=None, debug=False, parent=None):
     """Display Scene Inventory GUI
 
     Arguments:
-        debug (bool, optional): Run in debug-mode,
-            defaults to False
+        debug (bool, optional): Run in debug-mode, defaults to False
         parent (QtCore.QObject, optional): When provided parent the interface
             to this QObject.
 
@@ -940,10 +939,6 @@ def show(root=None, debug=False, parent=None):
     except (RuntimeError, AttributeError):
         pass
 
-    if debug:
-        import traceback
-        sys.excepthook = lambda typ, val, tb: traceback.print_last()
-
     with tools_lib.application():
         window = Window(parent)
         window.show()
diff --git a/avalon/tools/workfiles/app.py b/avalon/tools/workfiles/app.py
index 70c614de7..06e1ab85b 100644
--- a/avalon/tools/workfiles/app.py
+++ b/avalon/tools/workfiles/app.py
@@ -855,12 +855,22 @@ def _on_task_changed(self):
 
 
 def show(root=None, debug=False, parent=None, use_context=True):
-    """Show Work Files GUI"""
+    """Show Work Files GUI
     # todo: remove `root` argument to show()
 
-    if module.window:
+    Arguments:
+        root (str, optional): The root for the work files app
+        debug (bool, optional): Run in debug-mode, defaults to False
+        parent (QtCore.QObject, optional): When provided parent the interface
+            to this QObject.
+
+    """
+
+    try:
         module.window.close()
-        del(module.window)
+        del module.window
+    except (RuntimeError, AttributeError):
+        pass
 
     host = api.registered_host()
     if host is None:
@@ -882,10 +892,6 @@ def show(root=None, debug=False, parent=None, use_context=True):
         raise RuntimeError("Host is missing required Work Files interfaces: "
                            "%s (host: %s)" % (", ".join(missing), host))
 
-    if debug:
-        api.Session["AVALON_ASSET"] = "Mock"
-        api.Session["AVALON_TASK"] = "Testing"
-
     with tools_lib.application():
 
         window = Window(parent=parent)