title: Why does the length of the cursor change when I input in QPlainTextEdit?
body: <p>The length of the cursor changes when I input a word, and the length becomes the same as the word. How can I set QPlainTextEdit?</p>
  
  <pre><code>self.setFont(QFont("Consolas", 10, QFont.Normal))
  </code></pre>
  
  <p>I set the css font family "Consolas", and when I input English words, there is no problem. (I highlight the line number because when I get a screenshot the cursor disappear)</p>
  
  <p><img src="https://i.stack.imgur.com/6fhEA.png" alt="first image"></p>
  
  <p>But when I input Chinese word (this word is higher than English word), the problem comes.</p>
  
  <p><img src="https://i.stack.imgur.com/JKFbW.png" alt="second image"></p>
  
  <p>As you can see, the chinese word sinks (the height of the line became higher and the line sink): it is strange.</p>
  
  <p><img src="https://i.stack.imgur.com/xq79d.png" alt="third image"></p>
  
  <p>The effect of above picture in Sublime Text is what I want.</p>