Index: db_tag_processor.php
===================================================================
--- db_tag_processor.php	(revision 14472)
+++ db_tag_processor.php	(working copy)
@@ -884,8 +884,8 @@
 		if ($first_chars) {
 			$stripped_value = strip_tags($value, $this->SelectParam($params, 'allowed_tags'));
 
-			if (mb_strlen($stripped_value) > $first_chars) {
-				$value = mb_substr($stripped_value, 0, $first_chars) . ' ...';
+			if ( mb_strlen($stripped_value) > $first_chars ) {
+				$value = preg_replace('/\s+?(\S+)?$/', '', mb_substr($stripped_value, 0, $first_chars + 1)) . ' ...';
 			}
 		}