diff --git a/lib/editor/tinymce/plugins/pdw/tinymce/editor_plugin.js b/lib/editor/tinymce/plugins/pdw/tinymce/editor_plugin.js
index bd42cc0772555..90d5681e29243 100644
--- a/lib/editor/tinymce/plugins/pdw/tinymce/editor_plugin.js
+++ b/lib/editor/tinymce/plugins/pdw/tinymce/editor_plugin.js
@@ -156,31 +156,37 @@
 		_resizeIframe : function(ed, tb_id, dy) {
 		    var ifr = ed.getContentAreaContainer().firstChild;
 		    var ultcon = ed.getContainer().parentNode; //Ultimate parent container
+            var parcon = ed.getContainer(); //Parent container
+            var tablecon = ed.getContainer().childNodes[1]; // Table container
             var textarea = DOM.get(ed.id);
             var rows = textarea ? textarea.getAttribute('rows') : 3;
 
+            // This set of changes addresses MDL-42481.
+            // Moodle collapses form sections by setting display to none on the fcontainer element.
+            // In order to calculate the offsetWidth, the iframe must be visible within the DOM, otherwise it's offsetWidth is
+            // calculate as 0px.
+            // We attempt to find any collapsed element, uncollapse them, then calculate the width and height, and finally
+            // collapse them again.
+            var collapsedContainer = DOM.getParent(ifr, 'fieldset.collapsed');
+            if (collapsedContainer) {
+                DOM.removeClass(collapsedContainer, 'collapsed');
+            }
             // For very small text areas - allow the editable region to be smaller than the size of the toolbars.
             if (rows >= 3) {
-                // This set of changes addresses MDL-42481.
-                // Moodle collapses form sections by setting display to none on the fcontainer element.
-                // In order to calculate the offsetWidth, the iframe must be visible within the DOM, otherwise it's offsetWidth is
-                // calculate as 0px.
-                // We attempt to find any collapsed element, uncollapse them, then calculate the width and height, and finally
-                // collapse them again.
-                var collapsedContainer = DOM.getParent(ifr, 'fieldset.collapsed');
-                if (collapsedContainer) {
-                    DOM.removeClass(collapsedContainer, 'collapsed');
-                }
-
                 DOM.setStyle(ifr, 'height',DOM.getSize(ifr).h + dy); // Resize iframe
-                DOM.setStyle(textarea, 'width',DOM.getSize(ultcon).w);
-                DOM.setStyle(ifr, 'width',DOM.getSize(ultcon).w); // Resize iframe
                 ed.theme.deltaHeight += dy; // For resize cookie
+            }
 
-                if (collapsedContainer) {
-                    // We have a collapsedContainer, so collapse it again.
-                    DOM.addClass(collapsedContainer, 'collapsed');
-                }
+            // Set all the containers to the same width
+            DOM.setStyle(textarea, 'width',DOM.getSize(ultcon).w);
+            DOM.setStyle(parcon, 'width',DOM.getSize(ultcon).w);
+            DOM.setStyle(tablecon, 'width',DOM.getSize(ultcon).w);
+            DOM.setStyle(ifr, 'width',DOM.getSize(ultcon).w);
+
+
+            if (collapsedContainer) {
+                // We have a collapsedContainer, so collapse it again.
+                DOM.addClass(collapsedContainer, 'collapsed');
             }
 
 		},
@@ -205,3 +211,4 @@
 	// Register plugin
 	tinymce.PluginManager.add('pdw', tinymce.plugins.pdw);
 })();
+