title: Swift UIlabels not showing properly in uistackview
body: <p>I am trying to programatically add uilabels into a stackview but for some reason it is not showing up properly. Here is what I have:</p>
  <pre><code>let label = UILabel()
  label.textColor = UIColor.black
  label.text = &quot;Text that goes before &quot;
      
  let matlabel = MTMathUILabel()
  matlabel.labelMode = MTMathUILabelMode.text
  matlabel.latex = &quot;$\\frac{x}{y}$&quot;
  matlabel.textColor = UIColor.black
     
  let endLabel = UILabel()
  label.textColor = UIColor.black
  label.text = &quot;? after&quot;
  
  self.textStack.addArrangedSubview(label)
  self.textStack.addArrangedSubview(matlabel)      
  self.textStack.addArrangedSubview(endLabel) 
  </code></pre>
  <p>And here is what I get
  <a href="https://i.stack.imgur.com/F4j9X.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/F4j9X.png" alt="" /></a></p>