Limit and Limitstart are missing at the Saveurl-Array. Will be fixed with the next version. Meanwhile please replace controller.php in /components/com_joodb or change the saveurl array in the display function of this file.
// TODO complete list of params
$urlparams = array(
'option' => 'CMD',
'view' => 'CMD',
'task' => 'CMD',
'format' => 'CMD',
'layout' => 'CMD',
'id' => 'INT',
'jbid' => 'INT',
'letter' => 'CMD',
'search' => 'STRING',
'searchfield' => 'STRING',
'gs' => 'ARRAY',
'orderby' => 'CMD',
'ordering' => 'CMD',
'limit' => 'INT',
'limitstart' => 'INT',
'start' => 'INT',
'print' => 'BOOLEAN',
'lang' => 'CMD',
'Itemid' => 'INT'
);
