A long standing bug in views!...

views/widget/widget_gtk.cc

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "views/widget/widget_gtk.h"
 
 #include "app/gfx/path.h"
 #include "base/compiler_specific.h"
 #include "views/fill_layout.h"
 #include "views/widget/default_theme_provider.h"
@@ skipping 418 matching lines @@
     if (transparent_)
       ConfigureWidgetForTransparentBackground();
   }
   // The widget needs to be realized before handlers like size-allocate can
   // function properly.
   gtk_widget_realize(widget_);
 }
 
 void WidgetGtk::OnSizeAllocate(GtkWidget* widget, GtkAllocation* allocation) {
   root_view_->SetBounds(0, 0, allocation->width, allocation->height);
-  root_view_->Layout();
   root_view_->SchedulePaint();
 }
 
 gboolean WidgetGtk::OnMotionNotify(GtkWidget* widget, GdkEventMotion* event) {
   if (has_capture_ && is_mouse_down_) {
     last_mouse_event_was_move_ = false;
     int flags = Event::GetFlagsFromGdkState(event->state);
     if (event->state & GDK_BUTTON1_MASK)
       flags |= Event::EF_LEFT_BUTTON_DOWN;
     if (event->state & GDK_BUTTON2_MASK)
@@ skipping 361 matching lines @@
 void WidgetGtk::HandleGrabBroke() {
   if (has_capture_) {
     if (is_mouse_down_)
       root_view_->ProcessMouseDragCanceled();
     is_mouse_down_ = false;
     has_capture_ = false;
   }
 }
 
 }  // namespace views