Review fixes

tests/plugins/stylescombo/manual/stylewithnoselection.md

@@ -3,9 +3,9 @@
 @bender-ckeditor-plugins: wysiwygarea, toolbar, stylescombo
 
 1. Open browser console.
-1. Press empty button in toolbar,next to style selection.
-1. Press style drop down menu to open style list.
+1. Press empty button in toolbar. It's located on the right next to the styles' list.
+1. Open styles' list and check if there anyting appear in the console.
 
-**Expected:** There is nothing happen.
+**Expected:** There is no error in the console.
 
 **Unexpected:** Error is logged in console.

tests/plugins/stylescombo/stylescombo.js

@@ -73,6 +73,8 @@
 				var editor = bot.editor;
 				var selection = editor.getSelection();
 
+				// During opening combo is modifying selection, what force selection to be at the beginning of editable.
+				// Stub resets native selection before every execution of `getNative`, to properly simulate error case.
 				var stub = sinon.stub( CKEDITOR.dom.selection.prototype, 'getNative', function() {
 					if ( typeof window.getSelection != 'function' ) {
 						this.document.$.selection.empty();