title: Failed to resize image vertically in Draft.js
body: <p>I am using Draft.js plugin <a href="https://www.draft-js-plugins.com/plugin/image" rel="nofollow noreferrer">Resizeable</a>.</p>
  
  <p>I am trying to resize the image with original length-to-width ratio.</p>
  
  <p>However, for the code below, when I use the mouse to resize by the bottom edge of the image, the cursor changed, but it failed to resize. It only works well at the left and right edge.</p>
  
  <pre><code>const resizeablePlugin = createResizeablePlugin({
    vertical: 'relative',
    horizontal: 'relative'
  });
  </code></pre>
  
  <p><kbd><a href="https://codesandbox.io/s/ww58nv7zx8" rel="nofollow noreferrer">codesandbox</a></kbd></p>
  
  <p>After viewing the <a href="https://github.com/draft-js-plugins/draft-js-plugins/blob/master/draft-js-resizeable-plugin/src/createDecorator.js" rel="nofollow noreferrer">source code</a>, I still didn't figure out what causes this.</p>