set window geometry to primaryScreen geometry instead of just it's size / added Cursos resize to

Xgreeter

dist/Xgreeter

@@ -2,6 +2,7 @@
 #
 # LightDM wrapper to run around greeter X sessions.
 
+export XCURSOR_SIZE=16
 xsetroot -cursor_name left_ptr
 
 exec $@

src/browser/browser.py

@@ -138,10 +138,7 @@ class Application:
             self.window.windowFlags() | Qt.MaximizeUsingFullscreenGeometryHint
         )
 
-        screen_size = self.desktop.availableGeometry().size()
-
-        self.window.setBaseSize(screen_size)
-        self.window.resize(screen_size)
+        self.window.setGeometry(self.app.primaryScreen().geometry())
 
         state = self.states['NORMAL']
         if web_greeter_config["app"]["fullscreen"]: