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      <base href="https://bugs.webkit.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Animated GIFs fail to play in multi-column layout"
   href="https://bugs.webkit.org/show_bug.cgi?id=167901">167901</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Animated GIFs fail to play in multi-column layout
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>Safari 10
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>Normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P2
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Images
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>eprev&#64;me.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>When multiple animated GIFs are placed in multi-column container, Safari (10 and TP) will manage to play only a few of them.
More GIFs you put in, higher chance they fail to play. This is happening only when the value of `columns` property is greater than 1.

How to reproduce:
1) Open <a href="https://jsfiddle.net/sdxaxuv5/">https://jsfiddle.net/sdxaxuv5/</a>
2) Usually last two images (in 3rd column) fail to start playing.
3) Change `columns` property's value from 3 to 1, and the issue will disappear.

Checked on both iMac and iOS. Other browsers play all the images.</pre>
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      </p>
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