diff --git a/tryton/gui/main.py b/tryton/gui/main.py
index bb7997a434..5ec4bd54ec 100644
--- a/tryton/gui/main.py
+++ b/tryton/gui/main.py
@@ -1069,8 +1069,12 @@ class Main(object):
                 size=gtk.ICON_SIZE_MENU, detail=None)
             cell.set_property('pixbuf', pixbuf)
         column.set_cell_data_func(favorite_renderer, favorite_setter)
+
+        def toggle_favorite(renderer, path, treeview):
+            if treeview.props.window:
+                self.toggle_favorite(renderer, path, treeview)
         favorite_renderer.connect('clicked',
-            lambda *a: gobject.idle_add(self.toggle_favorite, *a), treeview)
+            lambda *a: gobject.idle_add(toggle_favorite, *a), treeview)
         # Unset fixed height mode to add column
         treeview.set_fixed_height_mode(False)
         treeview.append_column(column)
diff --git a/tryton/gui/window/dbcreate.py b/tryton/gui/window/dbcreate.py
index 68312edb00..739bcf9cf2 100644
--- a/tryton/gui/window/dbcreate.py
+++ b/tryton/gui/window/dbcreate.py
@@ -123,6 +123,8 @@ class DBCreate(object):
             entry.handler_unblock(_hid)
 
             def _move_cursor():
+                if not entry.props.window:
+                    return
                 with gtk.gdk.lock:
                     entry.set_position(_pos)
                     return False
diff --git a/tryton/gui/window/dbrestore.py b/tryton/gui/window/dbrestore.py
index d9a66a3a74..156435b30a 100644
--- a/tryton/gui/window/dbrestore.py
+++ b/tryton/gui/window/dbrestore.py
@@ -50,6 +50,8 @@ class DBRestore(object):
             entry.handler_unblock(_hid)
 
             def _move_cursor():
+                if not entry.props.window:
+                    return
                 with gtk.gdk.lock:
                     entry.set_position(_pos)
                     return False
diff --git a/tryton/gui/window/form.py b/tryton/gui/window/form.py
index 5d43657c2f..2f1ef79f0a 100644
--- a/tryton/gui/window/form.py
+++ b/tryton/gui/window/form.py
@@ -138,8 +138,12 @@ class Form(SignalEvent, TabContent):
 
         self.screen.signal_connect(self, 'record-message',
             self._record_message)
+
+        def record_modified(*args):
+            if self.widget_get().props.window:
+                self.record_modified(*args)
         self.screen.signal_connect(self, 'record-modified',
-            lambda *a: gobject.idle_add(self._record_modified, *a))
+            lambda *a: gobject.idle_add(record_modified, *a))
         self.screen.signal_connect(self, 'record-saved', self._record_saved)
         self.screen.signal_connect(self, 'attachment-count',
                 self._attachment_count)
diff --git a/tryton/gui/window/view_board/action.py b/tryton/gui/window/view_board/action.py
index a14b74fb66..77b17c06e8 100644
--- a/tryton/gui/window/view_board/action.py
+++ b/tryton/gui/window/view_board/action.py
@@ -140,4 +140,7 @@ class Action(SignalEvent):
         if hasattr(self, 'screen'):  # Catch early update
             # Using idle_add to prevent corruption of the event who triggered
             # the update.
-            gtk.idle_add(self.display)
+            def display():
+                if self.screen.widget.props.window:
+                    self.display()
+            gtk.idle_add(display)
diff --git a/tryton/gui/window/view_form/view/form_gtk/interface.py b/tryton/gui/window/view_form/view/form_gtk/interface.py
index 909f44930f..52d17cf383 100644
--- a/tryton/gui/window/view_form/view/form_gtk/interface.py
+++ b/tryton/gui/window/view_form/view/form_gtk/interface.py
@@ -67,10 +67,14 @@ class WidgetInterface(object):
 
     def send_modified(self, *args):
         def send(value):
+            if not self.widget.props.window:
+                return
             if self.record and self.get_value() == value:
                 self.record.signal('record-modified')
 
         def get_value():
+            if not self.widget.props.window:
+                return
             gobject.timeout_add(300, send, self.get_value())
         # Wait the current event is finished to retreive the value
         gobject.idle_add(get_value)
diff --git a/tryton/gui/window/view_form/view/form_gtk/many2one.py b/tryton/gui/window/view_form/view/form_gtk/many2one.py
index 7459bc4dd1..e0c4b1c0e2 100644
--- a/tryton/gui/window/view_form/view/form_gtk/many2one.py
+++ b/tryton/gui/window/view_form/view/form_gtk/many2one.py
@@ -310,6 +310,8 @@ class Many2One(WidgetInterface):
         value = self.field.get(self.record)
         if self.has_target(value):
             def clean():
+                if not self.wid_text.props.window:
+                    return
                 text = self.wid_text.get_text()
                 position = self.wid_text.get_position()
                 self.field.set_client(self.record,
diff --git a/tryton/gui/window/view_form/view/screen_container.py b/tryton/gui/window/view_form/view/screen_container.py
index 6bd6042c0b..8969eaf4ca 100644
--- a/tryton/gui/window/view_form/view/screen_container.py
+++ b/tryton/gui/window/view_form/view/screen_container.py
@@ -2,7 +2,6 @@
 #this repository contains the full copyright notices and license terms.
 import gtk
 import gettext
-import operator
 import gobject
 
 import tryton.common as common
@@ -348,6 +347,8 @@ class ScreenContainer(object):
 
     def match_selected(self, completion, model, iter):
         def callback():
+            if not self.search_entry.props.window:
+                return
             self.update()
             self.search_entry.emit('changed')
         gobject.idle_add(callback)
@@ -364,8 +365,12 @@ class ScreenContainer(object):
             self.search_entry.grab_focus()
 
     def key_press(self, widget, event):
-        gobject.idle_add(self.update)
-        gobject.idle_add(self.bookmark_match)
+        def keypress():
+            if not self.search_entry.props.window:
+                return
+            self.update()
+            self.bookmark_match()
+        gobject.idle_add(keypress)
 
     def icon_press(self, widget, icon_pos, event):
         if icon_pos == 1: