initial screen size is read from the config

src/com/badlogic/gdx/backends/lwjgl/LwjglGraphics.java

@@ -129,7 +129,7 @@ public class LwjglGraphics implements Graphics {
     // only for a > 0 && b > 0
     private float getMagnitudeDifference(float a, float b) {
         if (a < getMagnitudeDifferenceEpsilon || b < getMagnitudeDifferenceEpsilon) {
-            return a + b;
+            return (a + b) / getMagnitudeDifferenceEpsilon;
         }
 
         if (a > b) {