<p dir="auto">On my Nexus 5. Open the gallery, and then go into the app two levels deep. Then, hit the Android back button enough times to get back to the OS's main launch screen. Then, bring up the app switcher and select the Gallery app from the list of backgrounded apps. Tap the gallery app.</p>
<p dir="auto">Expected: quick resume of the gallery app</p>
<p dir="auto">Actual: black screen for a few seconds. Almost feels like a resume is slower than a cold start.</p>
<p dir="auto">[I'm sure I've typed this issue in already but I'm unable to find it. Perhaps I failed to press the submit button last time.]</p>
<p dir="auto">This problem is intermittent and its symptoms are somewhat unpredictable.  Sorry.</p>
<p dir="auto">If you back out of the Gallery app, wait a moment (I guess to make it more likely that it has been swapped out) and then tap on the paused app, sometimes nothing happens. Although the app's paused title bar changes from the gallery's color to gray (see below).</p>
<p dir="auto">Sometimes the app can be resumed after a second tap on the paused app. In this case the app restarts, but its state is lost. Sometimes the screen just goes dark and stays that way. The phone may appear to be hung although usually hammering on the system buttons will eventually bring it around.</p>
<p dir="auto">The problem occur in <code class="notranslate">--checked</code> and <code class="notranslate">--no-checked</code> modes.</p>
<ul dir="auto">
<li>before attempting to resume the app</li>
</ul>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://cloud.githubusercontent.com/assets/1377460/14437340/9e9ba0d6-ffd5-11e5-91df-b7d60604d242.png"><img src="https://cloud.githubusercontent.com/assets/1377460/14437340/9e9ba0d6-ffd5-11e5-91df-b7d60604d242.png" alt="screenshot" style="max-width: 100%;"></a></p>
<ul dir="auto">
<li>afterwards the app hasn't resumed, but the title color has changed:</li>
</ul>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://cloud.githubusercontent.com/assets/1377460/14437113/98e29ab0-ffd4-11e5-80aa-8aa1aef41682.png"><img src="https://cloud.githubusercontent.com/assets/1377460/14437113/98e29ab0-ffd4-11e5-80aa-8aa1aef41682.png" alt="screenshot" style="max-width: 100%;"></a></p>