title: Android Background Drawable Not Working in Button Since Android Studio 4.1
body: <p>I find out that since Android Studio 4.1 I cannot change the background color of a <code>Button</code> by setting color on its <code>android:background</code>, just no effect. And custom <code>Drawable</code> is not working as well.</p>
  <p><strong>My background <code>Drawable</code>:</strong></p>
  <pre><code>&lt;shape
      xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
      android:shape=&quot;rectangle&quot;&gt;
  
      &lt;stroke
          android:width=&quot;1.5dp&quot;
          android:color=&quot;@android:color/black&quot; /&gt;
  
      &lt;solid
          android:color=&quot;@android:color/white&quot; /&gt;
  
      &lt;corners
          android:radius=&quot;8dp&quot; /&gt;
  
  &lt;/shape&gt;
  </code></pre>
  <p><strong>My <code>Button</code>:</strong></p>
  <pre><code>&lt;Button
      android:layout_width=&quot;wrap_content&quot;
      android:layout_height=&quot;wrap_content&quot;
      android:text=&quot;Add To Cart&quot;
      android:background=&quot;@drawable/background3&quot;/&gt;
  </code></pre>
  <p><strong>Result:</strong></p>
  <p><a href="https://i.stack.imgur.com/rcoYI.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/rcoYI.jpg" alt="enter image description here" /></a></p>