title: NSTextField transparent background
body: <p>I create <em>transparent</em> <code>NSTextField</code> </p>
  
  <pre><code>self.myTextField = [[NSTextField alloc] initWithFrame:CGRectMake(backgroundView.frame.origin.x + backgroundView.frame.size.width + 20, self.projectTitle.frame.origin.y - 30.0, 100, 20)];
  self.myTextField.editable = NO;
  self.myTextField.bezeled = NO;
  self.myTextField.drawsBackground = YES;
  self.myTextField.backgroundColor = [NSColor clearColor];
  self.myTextField.selectable = NO;
  self.myTextField.font = [NSFont fontWithName:@"Helvetica Neue" size:16];
  
      [self addSubview:self.compressingTime];
  </code></pre>
  
  <p>And as a result text look bad. <img src="https://i.stack.imgur.com/tgk25.png" alt="enter image description here">
  If I set background color </p>
  
  <pre><code>    self.myTextField.backgroundColor = [NSColor colorWithCalibratedRed:0.85 green:0.85 blue:0.85 alpha:1.0];
  </code></pre>
  
  <p>everything looks ok<img src="https://i.stack.imgur.com/lw3Hy.png" alt="enter image description here">
  I have also tried with <code>drawsBackground = NO;</code> Do you guys know how to fix this?</p>