From efdf80c49c063902b71e833cc7472094877a597d Mon Sep 17 00:00:00 2001
From: Rachel Fenichel <fenichel@google.com>
Date: Mon, 19 Aug 2019 11:22:10 -0700
Subject: [PATCH] Reset height and width at the beginning of a measure

---
 core/renderers/measurables/rows.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/core/renderers/measurables/rows.js b/core/renderers/measurables/rows.js
index 06bce529a..dde183715 100644
--- a/core/renderers/measurables/rows.js
+++ b/core/renderers/measurables/rows.js
@@ -271,6 +271,8 @@ Blockly.blockRendering.TopRow.prototype.getPreviousConnection = function() {
  * @override
  */
 Blockly.blockRendering.TopRow.prototype.measure = function() {
+  this.width = 0;
+  this.height = 0;
   for (var e = 0; e < this.elements.length; e++) {
     var elem = this.elements[e];
     this.width += elem.width;
@@ -358,6 +360,8 @@ Blockly.blockRendering.BottomRow.prototype.getNextConnection = function() {
  * @override
  */
 Blockly.blockRendering.BottomRow.prototype.measure = function() {
+  this.width = 0;
+  this.height = 0;
   for (var e = 0; e < this.elements.length; e++) {
     var elem = this.elements[e];
     this.width += elem.width;
@@ -415,6 +419,8 @@ goog.inherits(Blockly.blockRendering.InputRow,
  * @package
  */
 Blockly.blockRendering.InputRow.prototype.measure = function() {
+  this.width = 0;
+  this.height = 0;
   var connectedBlockWidths = 0;
   for (var e = 0; e < this.elements.length; e++) {
     var elem = this.elements[e];