title: Elements not positionable on Fragment
body: <p>I created a Fragment element, but I can't position widget anywhere - it's just fixed on the top-left angle.</p>
  
  <p><a href="https://i.stack.imgur.com/nNNUX.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/nNNUX.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/Qi8ED.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Qi8ED.png" alt="enter image description here"></a></p>
  
  <pre><code>&lt;FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:tools="http://schemas.android.com/tools"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      tools:context="layout.BlankFragment"&gt;
  
      &lt;!-- TODO: Update blank fragment layout --&gt;
  
      &lt;ProgressBar
          style="?android:attr/progressBarStyle"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:id="@+id/progressBar5" /&gt;
  
      &lt;TextView
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:text="@string/hello_blank_fragment" /&gt;
  
      &lt;ProgressBar
          style="?android:attr/progressBarStyle"
          android:layout_width="282dp"
          android:layout_height="259dp"
          android:id="@+id/progressBar4" /&gt;
  
  &lt;/FrameLayout&gt;
  </code></pre>
  
  <p>Why this problem? This is my first Android application, but when using a normal Activity, the position works.</p>