Android Marshmallow - Custom seekbar progress bar not showing
<p>I'm trying to customize my seekbar like this:</p>

<p><a href="https://i.stack.imgur.com/VJbhq.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/VJbhq.png" alt="Custom seek bar"></a></p>

<p>On API level &lt; 23, progress line is visible even if progress of seekbar equals to 0. But on API level = 23, I have strange issue: progress line not showing in the same conditions =/ I want to see this line, because it is clarifying borders of usage my seekbar.</p>

<p>My <code>seek_bar_progress_bar.xml</code>:</p>

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;layer-list xmlns:android="http://schemas.android.com/apk/res/android"&gt;
    &lt;item android:id="@android:id/background" android:drawable="@drawable/seek_bar_track" /&gt;
    &lt;item android:id="@android:id/secondaryProgress"&gt;
        &lt;scale
            android:drawable="@drawable/seek_bar_track"
            android:scaleWidth="100%" /&gt;
    &lt;/item&gt;
    &lt;item android:id="@android:id/progress"&gt;
        &lt;scale
            android:drawable="@drawable/seek_bar_track"
            android:scaleWidth="100%" /&gt;
    &lt;/item&gt;
&lt;/layer-list&gt;
</code></pre>

<p>My <code>style.xml</code>:</p>

<pre><code>&lt;style name="seek_bar_style" parent="android:Widget.Holo.Light.SeekBar"&gt;
    &lt;item name="android:progressDrawable"&gt;@drawable/seek_bar_progress_bar&lt;/item&gt;
    &lt;item name="android:indeterminateDrawable"&gt;@drawable/seek_bar_progress_bar&lt;/item&gt;
    &lt;item name="android:thumb"&gt;@drawable/seek_bar_thumb_selector&lt;/item&gt;
&lt;/style&gt;
</code></pre>

<p>Thanks in advance!</p>