When the last post column has a 3 line entry, the vertical left border bars of the topics and posts columns do not stretch down to the bottom of the row.

To fix this the following css needs to replace the existing in /styles/prosilver/theme/content.css at c. line 65:
 

ul.topiclist dd {

	border-left: 1px solid transparent;

	padding: 4px 0 99999px 0;

	margin-bottom: -99995px;

	-webkit-box-sizing: border-box;

	-moz-box-sizing: border-box;

	box-sizing: border-box;

}