MySQL Workbench 6.3 (Mac) hangs on simple queries : <p>I am using MySQL Workbench 6.3.7 build 1199 CE (64 bits) on a Mac with OS X Yosemite 10.10.5.  I am connecting to an Amazon RDS MySQL instance.</p>

<p>When I enter a simple query such as</p>

<pre><code>select * from `devices`;
</code></pre>

<p>and click the lightning-bolt-with-cursor icon, the query starts, indicated by the spinner activating next to the "SQL File 4" tab in the following screenshot.  However, the query doesn't complete and it just hangs.  The white-hand-in-red-stop-sign icon is disabled.</p>

<p><a href="https://i.stack.imgur.com/rtr7a.png"><img src="https://i.stack.imgur.com/rtr7a.png" alt="screenshot of MySQL Workbench in hung state"></a></p>

<p>I can only force quit MySQL Workbench from this point on.  If I try to do a regular quit, nothing happens.</p>

<p>How can I consistently run a simple query on my database?  Sometimes it works (maybe 10% of the time), but it mostly just hangs.</p>
