title: NSTextField not showing it contents until clicked
body: <p>I have two NSTextField's witch's values are updated when one of them are being edited (it is size, and when editing one of text field, other is being updated constraining proportions). First time when these text fields are shown (it is shown in save panel) both text fields are showing their value, but when one of them is being edited later save panel is opened again, one of text fields are not showing its value till I press mouse on it (select for editing). When mouse is pressed somewhere else (for example on other text field, value gones again. Text field value is automatically edited like that:</p>
  
  <pre><code>float _other_text_field_value = [_other_text_field floatValue];
  float _aspect_ratio = _image_width/_image_height;
  float _new_text_field_value = _other_text_field_value/aspect_ratio;
  [_text_field setFloatValue:_new_text_field_value]; 
  </code></pre>
  
  <p>Image:</p>
  
  <p><img src="https://i.stack.imgur.com/Hbpjw.png" alt="enter image description here">
  <img src="https://i.stack.imgur.com/5uhTo.png" alt="enter image description here"></p>