roll back temporary rectangle filling workaround

for a bug in Chrome v57

history.txt

@@ -3810,8 +3810,6 @@ Fixes:
 
 === v4.1.0.5 maintenance release ===
 
-*** in development ***
-
 171201
 ------
 * GUI: started development on v 4.1.1
@@ -3891,7 +3889,6 @@ Fixes:
 * Russian translation update, thanks, temap!
 * release
 
-
 === v4.1.1 minor release ===
 
 v4.1.1 New Features:
@@ -3922,7 +3919,6 @@ Notable Fixes:
 * when deleting a temporary clone, detach all its parts and delete the temporary ones
 * new release protocol to avoid browser caching related version conflicts
 
-
 Translation Updates:
 * German
 * Greek
@@ -3930,3 +3926,21 @@ Translation Updates:
 * Chinese
 * Spanish
 * Russian
+
+*** in development ***
+
+180206
+------
+* GUI: start developing v4.1.2
+* Morphic: roll back temporary rectangle filling workaround for a bug in Chrome v57
+
+
+=== v4.1.2 features ===
+
+v4.1.2 New Features:
+
+Notable Changes:
+
+Notable Fixes:
+
+Translation Updates:

morphic.js

@@ -1163,7 +1163,7 @@
 
 /*global window, HTMLCanvasElement, FileReader, Audio, FileList*/
 
-var morphicVersion = '2018-January-25';
+var morphicVersion = '2018-February-06';
 var modules = {}; // keep track of additional loaded modules
 var useBlurredShadows = getBlurredShadowSupport(); // check for Chrome-bug
 
@@ -3251,31 +3251,7 @@ Morph.prototype.drawNew = function () {
     this.image = newCanvas(this.extent());
     var context = this.image.getContext('2d');
     context.fillStyle = this.color.toString();
-
-    /*
-        Chrome issue:
-
-            when filling a rectangular area, versions of Chrome beginning with
-            57.0.2987.133 start introducing vertical transparent stripes
-            to the right of the rectangle.
-            The following code replaces the original fillRect() call with
-            an explicit almost-rectangular path that miraculously  makes
-            sure the whole rectangle gets filled correctly.
-
-        Important: This needs to be monitored in the future so we can
-        revert to sane code once this Chrome issue has been resolved again.
-    */
-
-    // context.fillRect(0, 0, this.width(), this.height()); // taken out
-
-    context.beginPath();
-    context.moveTo(0, 0);
-    context.lineTo(this.image.width, 0);
-    context.lineTo(this.image.width, this.image.height);
-    context.lineTo(0, this.image.height + 0.0001); // yeah, I luv Chrome!
-    context.closePath();
-    context.fill();
-
+    context.fillRect(0, 0, this.width(), this.height());
     if (this.cachedTexture) {
         this.drawCachedTexture();
     } else if (this.texture) {