diff --git a/kivy/core/window/window_pygame.py b/kivy/core/window/window_pygame.py
index 6db0ea61e..c8cf59665 100644
--- a/kivy/core/window/window_pygame.py
+++ b/kivy/core/window/window_pygame.py
@@ -66,7 +66,6 @@ class WindowPygame(WindowBase):
                 multisamples)
         pygame.display.gl_set_attribute(pygame.GL_DEPTH_SIZE, 16)
         pygame.display.gl_set_attribute(pygame.GL_STENCIL_SIZE, 1)
-        pygame.display.gl_set_attribute(pygame.GL_ALPHA_SIZE, 8)
         pygame.display.set_caption(self.title)
 
         if self.position == 'auto':
@@ -135,6 +134,22 @@ class WindowPygame(WindowBase):
         self._size = (info.current_w, info.current_h)
         #self.dispatch('on_resize', *self._size)
 
+        # in order to debug futur issue with pygame/display, let's show
+        # more debug output.
+        Logger.debug('Window: Display driver ' + pygame.display.get_driver())
+        Logger.debug('Window: Actual window size: %dx%d',
+                info.current_w, info.current_h)
+        Logger.debug('Window: Actual color bits r%d g%d b%d a%d',
+                pygame.display.gl_get_attribute(pygame.GL_RED_SIZE),
+                pygame.display.gl_get_attribute(pygame.GL_GREEN_SIZE),
+                pygame.display.gl_get_attribute(pygame.GL_BLUE_SIZE),
+                pygame.display.gl_get_attribute(pygame.GL_ALPHA_SIZE))
+        Logger.debug('Window: Actual depth bits: %d',
+                pygame.display.gl_get_attribute(pygame.GL_DEPTH_SIZE))
+        Logger.debug('Window: Actual stencil bits: %d',
+                pygame.display.gl_get_attribute(pygame.GL_STENCIL_SIZE))
+        Logger.debug('Window: Actual multisampling samples: %d',
+                pygame.display.gl_get_attribute(pygame.GL_MULTISAMPLESAMPLES))
         super(WindowPygame, self).create_window()
 
         # set mouse visibility
diff --git a/kivy/uix/modalview.py b/kivy/uix/modalview.py
index 92ebe7a18..e9fc6f0a0 100644
--- a/kivy/uix/modalview.py
+++ b/kivy/uix/modalview.py
@@ -8,8 +8,9 @@ The :class:`ModalView` widget is used to create modal views. By default, the
 view will cover the whole "parent" window.
 
 Remember that the default size of a Widget is size_hint=(1, 1). If you don't
-want your view to be fullscreen, deactivate the size_hint and use a specific
-size attribute.
+want your view to be fullscreen, either use lower than 1 size hints (for
+instance size_hint=(.8, .8)) or deactivate the size_hint and use fixed size
+attributes.
 
 Examples
 --------
diff --git a/kivy/uix/popup.py b/kivy/uix/popup.py
index 61fbca346..1a2d7c971 100644
--- a/kivy/uix/popup.py
+++ b/kivy/uix/popup.py
@@ -12,8 +12,9 @@ will cover the whole "parent" window. When you are creating a popup, you must at
 a minimum set a :data:`Popup.title` and a :data:`Popup.content` widget.
 
 Remember that the default size of a Widget is size_hint=(1, 1). If you don't
-want your popup to be fullscreen, deactivate the size_hint and use a specific
-size attribute.
+want your popup to be fullscreen, either use lower than 1 size hints (for
+instance size_hint=(.8, .8)) or deactivate the size_hint and use fixed size
+attributes.
 
 
 .. versionchanged:: 1.4.0
@@ -115,7 +116,7 @@ class Popup(ModalView):
 
     .. versionadded:: 1.1.0
 
-    :data:`background_color` is a :class:`~kivy.properties.ListProperty`,
+    :data:`separator_color` is a :class:`~kivy.properties.ListProperty`,
     default to [47 / 255., 167 / 255., 212 / 255., 1.]
     '''
 
diff --git a/kivy/uix/widget.py b/kivy/uix/widget.py
index ae3153a4e..7e2628e53 100644
--- a/kivy/uix/widget.py
+++ b/kivy/uix/widget.py
@@ -280,7 +280,7 @@ class Widget(EventDispatcher):
             children = self.children
             if index >= len(children):
                 index = len(children)
-                next_index = 0
+                next_index = -1
             else:
                 next_child = children[index]
                 next_index = canvas.indexof(next_child.canvas)