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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 - [GTK] Weird rendering of textarea with dashed and radius borders"
   href="https://bugs.webkit.org/show_bug.cgi?id=155821">155821</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[GTK] Weird rendering of textarea with dashed and radius borders
          </td>
        </tr>

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

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

        <tr>
          <th>Version</th>
          <td>Other
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux
          </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>HTML DOM
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>hur.ims&#64;navercorp.com
          </td>
        </tr></table>
      <p>
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        <pre>Created <span class=""><a href="attachment.cgi?id=274800" name="attach_274800" title="a simple test page">attachment 274800</a> <a href="attachment.cgi?id=274800&amp;action=edit" title="a simple test page">[details]</a></span>
a simple test page

Textarea with a dashed line and a round corner shows a weird rendering in GTK port. Safari is OK.
I saw this on the github in the reply text box.
I've attached a simplified page.
You can reproduce like this.
1. Type 'a' many times so that text lines become more than two lines.
2. Type left arrow key to move the caret to the left.</pre>
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      </p>
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      <ul>
          <li>You are the assignee for the bug.</li>
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