partial fix was applied to solve window reszing to zero height issue

core/src/processing/core/PApplet.java

@@ -2254,7 +2254,12 @@ public class PApplet implements PConstants {
 //      if (!primary) {
 //        surface.initImage(pg, w, h);
 //      }
-      pg.setSize(w, h);
+      if(w <= 0 and h <= 0) { //setting size to 0 if size is invalid
+        pg.setSize(0, 0);
+      } else {
+        pg.setSize(w, h);
+      }
+
 
       // everything worked, return it
       return pg;
@@ -2299,6 +2304,8 @@ public class PApplet implements PConstants {
         if (e.getMessage().contains("cannot be <= 0")) {
           // IllegalArgumentException will be thrown if w/h is <= 0
           // http://code.google.com/p/processing/issues/detail?id=983
+
+          // a fix should be done here to resize the window back to 0 if new size is not valid
           throw new RuntimeException(e);
 
         } else {