diff --git a/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor-debug.js b/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor-debug.js
index ccdc137dc2a..b656e3f6074 100644
--- a/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor-debug.js
+++ b/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor-debug.js
@@ -352,7 +352,7 @@ M.editor_atto = M.editor_atto || {
             cssfont = css.responseText.substring(pos + 'font:'.length, css.responseText.length - 1);
             atto.setStyle('font', cssfont);
         }
-        atto.setStyle('minHeight', (1.2 * (textarea.getAttribute('rows') - 1)) + 'em');
+        atto.setStyle('minHeight', (1.2 * (textarea.getAttribute('rows'))) + 'em');
 
         // Copy text to editable div.
         atto.append(textarea.get('value'));
diff --git a/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor-min.js b/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor-min.js
index 6bf193f3e92..0a7988214da 100644
--- a/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor-min.js
+++ b/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor-min.js
@@ -1,2 +1,2 @@
-YUI.add("moodle-editor_atto-editor",function(e,t){CSS={CONTENT:"editor_atto_content",CONTENTWRAPPER:"editor_atto_content_wrap",TOOLBAR:"editor_atto_toolbar",WRAPPER:"editor_atto"},M.editor_atto=M.editor_atto||{buttonhandlers:{},menus:{},menuhandlers:{},filepickeroptions:{},widgets:{},showhide_menu_handler:function(e){e.preventDefault();var t=this.getAttribute("disabled"),n=this.getAttribute("data-menu"),r=M.editor_atto.menus[n],i=r.get("bodyContent");r.get("visible")||t?(r.hide(),i.detach("clickoutside")):(i.on("clickoutside",function(e){e.target.ancestor()!==this&&e.target!==this&&r.get("visible")&&(i.detach("clickoutside"),r.hide())},this),r.show())},buttonclicked_handler:function(e){var t=this.getAttribute("data-editor"),n=this.getAttribute("data-plugin"),r=this.getAttribute("data-handler"),i=M.editor_atto.menus[n+"_"+t];i&&i.hide();if(M.editor_atto.is_enabled(t,n))return r=M.editor_atto.buttonhandlers[r],r(e,t)},is_enabled:function(t,n){var r=e.one("#"+t+"_toolbar .atto_"+n+"_button");return!r.hasAttribute("disabled")},disable_all_widgets:function(t){var n,r;for(n in M.editor_atto.widgets)r=e.one("#"+t+"_toolbar .atto_"+n+"_button"),r&&r.setAttribute("disabled","true")},enable_widget:function(t,n){var r=e.one("#"+t+"_toolbar .atto_"+n+"_button");r&&r.removeAttribute("disabled")},enable_all_widgets:function(t){var n,r;for(n in M.editor_atto.widgets)r=e.one("#"+t+"_toolbar .atto_"+n+"_button"),r&&r.removeAttribute("disabled")},add_toolbar_menu:function(t,n,r,i,s){var o=e.one("#"+t+"_toolbar"),u=e.one("#"+t+"_toolbar .atto_group."+i+"_group"),a,f;u||(u=e.Node.create('<div class="atto_group '+i+'_group"></div>'),o.append(u)),f=e.Node.create('<button class="atto_'+n+'_button atto_hasmenu" '+'data-editor="'+e.Escape.html(t)+'" '+'tabindex="-1" '+'data-menu="'+n+"_"+t+'" >'+r+"</button>"),u.append(f),a=o.getAttribute("aria-activedescendant"),a||(f.setAttribute("tabindex","0"),o.setAttribute("aria-activedescendant",f.generateID())),M.editor_atto.widgets[n]=n;var l=e.Node.create('<div class="atto_'+n+"_menu"+' atto_menu" data-editor="'+e.Escape.html(t)+'"></div>'),c=0,h={};for(c=0;c<s.length;c++)h=s[c],l.append(e.Node.create('<div class="atto_menuentry"><a href="#" class="atto_'+n+"_action_"+c+'" '+'data-editor="'+e.Escape.html(t)+'" '+'data-plugin="'+e.Escape.html(n)+'" '+'data-handler="'+e.Escape.html(n+"_action_"+c)+'">'+h.text+"</a>"+"</div>")),M.editor_atto.buttonhandlers[n+"_action_"+c]||(e.one("body").delegate("click",M.editor_atto.buttonclicked_handler,".atto_"+n+"_action_"+c),M.editor_atto.buttonhandlers[n+"_action_"+c]=h.handler);M.editor_atto.buttonhandlers[n]||(e.one("body").delegate("click",M.editor_atto.showhide_menu_handler,".atto_"+n+"_button"),M.editor_atto.buttonhandlers[n]=!0);var p=new M.core.dialogue({bodyContent:l,visible:!1,width:"14em",zindex:100,lightbox:!1,closeButton:!1,centered:!1,align:{node:f,points:[e.WidgetPositionAlign.TL,e.WidgetPositionAlign.BL]}});M.editor_atto.menus[n+"_"+t]=p,p.render(),p.hide(),p.headerNode.hide()},add_toolbar_button:function(t,n,r,i,s){var o=e.one("#"+t+"_toolbar"),u=e.one("#"+t+"_toolbar .atto_group."+i+"_group"),a,f;u||(u=e.Node.create('<div class="atto_group '+i+'_group"></div>'),o.append(u)),a=e.Node.create('<button class="atto_'+n+'_button" '+'data-editor="'+e.Escape.html(t)+'" '+'data-plugin="'+e.Escape.html(n)+'" '+'tabindex="-1" '+'data-handler="'+e.Escape.html(n)+'">'+r+"</button>"),u.append(a),f=o.getAttribute("aria-activedescendant"),f||(a.setAttribute("tabindex","0"),o.setAttribute("aria-activedescendant",a.generateID())),M.editor_atto.buttonhandlers[n]||(e.one("body").delegate("click",M.editor_atto.buttonclicked_handler,".atto_"+n+"_button"),M.editor_atto.buttonhandlers[n]=s),M.editor_atto.widgets[n]=n},is_active:function(t){var n=M.editor_atto.get_selection();n.length&&(n=n.pop());var r=null;return n.parentElement?r=e.one(n.parentElement()):r=e.one(n.startContainer),r&&r.ancestor("#"+t+"editable")!==null},focus:function(t){e.one("#"+t+"editable").focus()},init:function(t){var n=e.one("#"+t.elementid),r=e.Node.create('<div class="'+CSS.WRAPPER+'" />'),i=e.Node.create('<div id="'+t.elementid+'editable" '+'contenteditable="true" '+'spellcheck="true" '+'class="'+CSS.CONTENT+'" />'),s="",o=e.Node.create('<div class="'+CSS.TOOLBAR+'" id="'+t.elementid+'_toolbar" role="toolbar"/>'),u=e.Node.create('<div class="'+CSS.CONTENTWRAPPER+'" />');u.appendChild(i),r.appendChild(o),r.appendChild(u);var a=e.io(t.content_css,{sync:!0}),f=a.responseText.indexOf("font:");f&&(s=a.responseText.substring(f+"font:".length,a.responseText.length-1),i.setStyle("font",s)),i.setStyle("minHeight",1.2*(n.getAttribute("rows")-1)+"em"),i.append(n.get("value")),n.get("parentNode").insert(r,n),i.setStyle("color",n.getStyle("color")),i.setStyle("lineHeight",n.getStyle("lineHeight")),i.setStyle("fontSize",n.getStyle("fontSize")),n.hide(),i.on("blur",function(){n.set("value",i.getHTML())}),e.one(e.config.doc.body).delegate("key",this.keyboard_navigation,"down:37,39","#"+t.elementid+"_toolbar",this,t.elementid),M.editor_atto.filepickeroptions[t.elementid]=t.filepickeroptions},keyboard_navigation:function(t,n){var r,i,s,o;t.preventDefault(),r=e.all("#"+n+"_toolbar button"),s=e.one("#"+n+"_toolbar").getAttribute("aria-activedescendant");if(!s)return;i=e.one("#"+s),i.setAttribute("tabindex","-1"),o=r.indexOf(i),t.keyCode===37?(o--,o<0&&(o=r.size()-1)):(o++,o>=r.size()&&(o=0)),i=r.item(o),i.setAttribute("tabindex","0"),i.focus(),e.one("#"+n+"_toolbar").setAttribute("aria-activedescendant",i.generateID())},show_filepicker:function(t,n,r){e.use("core_filepicker",function(e){var i=M.editor_atto.filepickeroptions[t][n];i.formcallback=r,i.editor_target=e.one(t),M.core_filepicker.show(e,i)})},get_selection_from_node:function(e){var t;return window.getSelection?(t=document.createRange(),t.setStartBefore(e.getDOMNode()),t.setEndAfter(e.getDOMNode()),[t]):document.selection?(t=document.body.createTextRange(),t.moveToElementText(e.getDOMNode()),t):!1},get_selection:function(){
-if(window.getSelection){var e=window.getSelection(),t=[],n=0;for(n=0;n<e.rangeCount;n++)t.push(e.getRangeAt(n));return t}return document.selection&&document.selection.createRange?document.selection.createRange():!1},get_selection_parent_node:function(){var e=M.editor_atto.get_selection();if(e.length>0)return e[0].commonAncestorContainer},get_selection_text:function(){var e=M.editor_atto.get_selection();if(e.length>0&&e[0].cloneContents)return e[0].cloneContents()},set_selection:function(e){var t,n;if(window.getSelection){t=window.getSelection(),t.removeAllRanges();for(n=0;n<e.length;n++)t.addRange(e[n])}else document.selection&&e.select&&e.select()}}},"@VERSION@",{requires:["node","io","overlay","escape","event-key","moodle-core-notification"]});
+YUI.add("moodle-editor_atto-editor",function(e,t){CSS={CONTENT:"editor_atto_content",CONTENTWRAPPER:"editor_atto_content_wrap",TOOLBAR:"editor_atto_toolbar",WRAPPER:"editor_atto"},M.editor_atto=M.editor_atto||{buttonhandlers:{},menus:{},menuhandlers:{},filepickeroptions:{},widgets:{},showhide_menu_handler:function(e){e.preventDefault();var t=this.getAttribute("disabled"),n=this.getAttribute("data-menu"),r=M.editor_atto.menus[n],i=r.get("bodyContent");r.get("visible")||t?(r.hide(),i.detach("clickoutside")):(i.on("clickoutside",function(e){e.target.ancestor()!==this&&e.target!==this&&r.get("visible")&&(i.detach("clickoutside"),r.hide())},this),r.show())},buttonclicked_handler:function(e){var t=this.getAttribute("data-editor"),n=this.getAttribute("data-plugin"),r=this.getAttribute("data-handler"),i=M.editor_atto.menus[n+"_"+t];i&&i.hide();if(M.editor_atto.is_enabled(t,n))return r=M.editor_atto.buttonhandlers[r],r(e,t)},is_enabled:function(t,n){var r=e.one("#"+t+"_toolbar .atto_"+n+"_button");return!r.hasAttribute("disabled")},disable_all_widgets:function(t){var n,r;for(n in M.editor_atto.widgets)r=e.one("#"+t+"_toolbar .atto_"+n+"_button"),r&&r.setAttribute("disabled","true")},enable_widget:function(t,n){var r=e.one("#"+t+"_toolbar .atto_"+n+"_button");r&&r.removeAttribute("disabled")},enable_all_widgets:function(t){var n,r;for(n in M.editor_atto.widgets)r=e.one("#"+t+"_toolbar .atto_"+n+"_button"),r&&r.removeAttribute("disabled")},add_toolbar_menu:function(t,n,r,i,s){var o=e.one("#"+t+"_toolbar"),u=e.one("#"+t+"_toolbar .atto_group."+i+"_group"),a,f;u||(u=e.Node.create('<div class="atto_group '+i+'_group"></div>'),o.append(u)),f=e.Node.create('<button class="atto_'+n+'_button atto_hasmenu" '+'data-editor="'+e.Escape.html(t)+'" '+'tabindex="-1" '+'data-menu="'+n+"_"+t+'" >'+r+"</button>"),u.append(f),a=o.getAttribute("aria-activedescendant"),a||(f.setAttribute("tabindex","0"),o.setAttribute("aria-activedescendant",f.generateID())),M.editor_atto.widgets[n]=n;var l=e.Node.create('<div class="atto_'+n+"_menu"+' atto_menu" data-editor="'+e.Escape.html(t)+'"></div>'),c=0,h={};for(c=0;c<s.length;c++)h=s[c],l.append(e.Node.create('<div class="atto_menuentry"><a href="#" class="atto_'+n+"_action_"+c+'" '+'data-editor="'+e.Escape.html(t)+'" '+'data-plugin="'+e.Escape.html(n)+'" '+'data-handler="'+e.Escape.html(n+"_action_"+c)+'">'+h.text+"</a>"+"</div>")),M.editor_atto.buttonhandlers[n+"_action_"+c]||(e.one("body").delegate("click",M.editor_atto.buttonclicked_handler,".atto_"+n+"_action_"+c),M.editor_atto.buttonhandlers[n+"_action_"+c]=h.handler);M.editor_atto.buttonhandlers[n]||(e.one("body").delegate("click",M.editor_atto.showhide_menu_handler,".atto_"+n+"_button"),M.editor_atto.buttonhandlers[n]=!0);var p=new M.core.dialogue({bodyContent:l,visible:!1,width:"14em",zindex:100,lightbox:!1,closeButton:!1,centered:!1,align:{node:f,points:[e.WidgetPositionAlign.TL,e.WidgetPositionAlign.BL]}});M.editor_atto.menus[n+"_"+t]=p,p.render(),p.hide(),p.headerNode.hide()},add_toolbar_button:function(t,n,r,i,s){var o=e.one("#"+t+"_toolbar"),u=e.one("#"+t+"_toolbar .atto_group."+i+"_group"),a,f;u||(u=e.Node.create('<div class="atto_group '+i+'_group"></div>'),o.append(u)),a=e.Node.create('<button class="atto_'+n+'_button" '+'data-editor="'+e.Escape.html(t)+'" '+'data-plugin="'+e.Escape.html(n)+'" '+'tabindex="-1" '+'data-handler="'+e.Escape.html(n)+'">'+r+"</button>"),u.append(a),f=o.getAttribute("aria-activedescendant"),f||(a.setAttribute("tabindex","0"),o.setAttribute("aria-activedescendant",a.generateID())),M.editor_atto.buttonhandlers[n]||(e.one("body").delegate("click",M.editor_atto.buttonclicked_handler,".atto_"+n+"_button"),M.editor_atto.buttonhandlers[n]=s),M.editor_atto.widgets[n]=n},is_active:function(t){var n=M.editor_atto.get_selection();n.length&&(n=n.pop());var r=null;return n.parentElement?r=e.one(n.parentElement()):r=e.one(n.startContainer),r&&r.ancestor("#"+t+"editable")!==null},focus:function(t){e.one("#"+t+"editable").focus()},init:function(t){var n=e.one("#"+t.elementid),r=e.Node.create('<div class="'+CSS.WRAPPER+'" />'),i=e.Node.create('<div id="'+t.elementid+'editable" '+'contenteditable="true" '+'spellcheck="true" '+'class="'+CSS.CONTENT+'" />'),s="",o=e.Node.create('<div class="'+CSS.TOOLBAR+'" id="'+t.elementid+'_toolbar" role="toolbar"/>'),u=e.Node.create('<div class="'+CSS.CONTENTWRAPPER+'" />');u.appendChild(i),r.appendChild(o),r.appendChild(u);var a=e.io(t.content_css,{sync:!0}),f=a.responseText.indexOf("font:");f&&(s=a.responseText.substring(f+"font:".length,a.responseText.length-1),i.setStyle("font",s)),i.setStyle("minHeight",1.2*n.getAttribute("rows")+"em"),i.append(n.get("value")),n.get("parentNode").insert(r,n),i.setStyle("color",n.getStyle("color")),i.setStyle("lineHeight",n.getStyle("lineHeight")),i.setStyle("fontSize",n.getStyle("fontSize")),n.hide(),i.on("blur",function(){n.set("value",i.getHTML())}),e.one(e.config.doc.body).delegate("key",this.keyboard_navigation,"down:37,39","#"+t.elementid+"_toolbar",this,t.elementid),M.editor_atto.filepickeroptions[t.elementid]=t.filepickeroptions},keyboard_navigation:function(t,n){var r,i,s,o;t.preventDefault(),r=e.all("#"+n+"_toolbar button"),s=e.one("#"+n+"_toolbar").getAttribute("aria-activedescendant");if(!s)return;i=e.one("#"+s),i.setAttribute("tabindex","-1"),o=r.indexOf(i),t.keyCode===37?(o--,o<0&&(o=r.size()-1)):(o++,o>=r.size()&&(o=0)),i=r.item(o),i.setAttribute("tabindex","0"),i.focus(),e.one("#"+n+"_toolbar").setAttribute("aria-activedescendant",i.generateID())},show_filepicker:function(t,n,r){e.use("core_filepicker",function(e){var i=M.editor_atto.filepickeroptions[t][n];i.formcallback=r,i.editor_target=e.one(t),M.core_filepicker.show(e,i)})},get_selection_from_node:function(e){var t;return window.getSelection?(t=document.createRange(),t.setStartBefore(e.getDOMNode()),t.setEndAfter(e.getDOMNode()),[t]):document.selection?(t=document.body.createTextRange(),t.moveToElementText(e.getDOMNode()),t):!1},get_selection:function(){if(window
+.getSelection){var e=window.getSelection(),t=[],n=0;for(n=0;n<e.rangeCount;n++)t.push(e.getRangeAt(n));return t}return document.selection&&document.selection.createRange?document.selection.createRange():!1},get_selection_parent_node:function(){var e=M.editor_atto.get_selection();if(e.length>0)return e[0].commonAncestorContainer},get_selection_text:function(){var e=M.editor_atto.get_selection();if(e.length>0&&e[0].cloneContents)return e[0].cloneContents()},set_selection:function(e){var t,n;if(window.getSelection){t=window.getSelection(),t.removeAllRanges();for(n=0;n<e.length;n++)t.addRange(e[n])}else document.selection&&e.select&&e.select()}}},"@VERSION@",{requires:["node","io","overlay","escape","event-key","moodle-core-notification"]});
diff --git a/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor.js b/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor.js
index ccdc137dc2a..b656e3f6074 100644
--- a/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor.js
+++ b/lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor.js
@@ -352,7 +352,7 @@ M.editor_atto = M.editor_atto || {
             cssfont = css.responseText.substring(pos + 'font:'.length, css.responseText.length - 1);
             atto.setStyle('font', cssfont);
         }
-        atto.setStyle('minHeight', (1.2 * (textarea.getAttribute('rows') - 1)) + 'em');
+        atto.setStyle('minHeight', (1.2 * (textarea.getAttribute('rows'))) + 'em');
 
         // Copy text to editable div.
         atto.append(textarea.get('value'));
diff --git a/lib/editor/atto/yui/src/editor/js/editor.js b/lib/editor/atto/yui/src/editor/js/editor.js
index be956f0040f..d6e0c6f3dc3 100644
--- a/lib/editor/atto/yui/src/editor/js/editor.js
+++ b/lib/editor/atto/yui/src/editor/js/editor.js
@@ -350,7 +350,7 @@ M.editor_atto = M.editor_atto || {
             cssfont = css.responseText.substring(pos + 'font:'.length, css.responseText.length - 1);
             atto.setStyle('font', cssfont);
         }
-        atto.setStyle('minHeight', (1.2 * (textarea.getAttribute('rows') - 1)) + 'em');
+        atto.setStyle('minHeight', (1.2 * (textarea.getAttribute('rows'))) + 'em');
 
         // Copy text to editable div.
         atto.append(textarea.get('value'));