This occurred with a new install of CKEditor. Kind of drove me crazy for a day. First install was standard library version of CKEditor, later tried complete library. Toolbar display was missing buttons, or rather, the buttons are blank using Windows 8.1 and IE 11, version 11.0.9600.16518, update version 11.0.3. Finally thought to see what the display would show with firebug and the toolbar display was normal. Normal with Chrome, too. This could be an issue with IE or my computer but thought it would help to document since I couldn't find any thing similar in my searches. See screen shot for image of toolbar. Tool tips show up OK over empty button.

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CJEditor toolbar button problem.jpg239.08 KBgary marshall
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