title: How to enable HTML5 canvas text in Firefox?
body: <p>I can see canvas (lines, drawings, etc.), but not canvas text in Firefox profile A.</p>
  
  <p>I'm on Firefox 38.0.5 EME-free on Windows 7. I haven't done anything to the Firefox folder. I can see canvas text on my other profile B.</p>
  
  <p>Here's an example of what I want to be able to see: <a href="http://www.w3schools.com/tags/canvas_filltext.asp" rel="nofollow">HTML canvas fillText() Method</a>.</p>
  
  <ul>
  <li>Profile A: the canvas appears as a white rectangle.</li>
  <li>Profile B: I see "Hello World! Big Smile".</li>
  </ul>
  
  <p>I tried <code>about:config</code> and searched for "canvas", but the entries were the same in both my profiles.</p>
  
  <p>In <a href="http://diveintohtml5.info/detect.html#canvas-text" rel="nofollow">Detecting HTML5 Features - Canvas Text</a>, it says:</p>
  
  <blockquote>
    <p>Your browser supports the canvas text API</p>
  </blockquote>
  
  <p>I get these logs in the browser console if I load the w3schools site:</p>
  
  <blockquote>
    <p>NS_ERROR_FAILURE: Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsITaskbarTabPreview.invalidate]
    WindowsPreviewPerTab.jsm:406:0</p>
    
    <p>The character encoding of the HTML document was not declared. The document will render with garbled text in some browser configurations if the document contains characters from outside the US-ASCII range. The character encoding of the page must be declared in the document or in the transfer protocol. 
    tryit.asp</p>
    
    <p>POST ...w3schoolslink...tags/tryit_view.asp
    [HTTP/1.1 200 OK 210ms]</p>
    
    <p>The character encoding of a framed document was not declared. The document may appear different if viewed without the document framing it. 
    tryit_view.asp</p>
  </blockquote>
  
  <p>And the last two if I click "See Result" on the same w3schools page.</p>
  
  <p>Don't tell me to reset Firefox. I've spent years customizing it just the way I want.</p>