Adding a CSS clear property div works to fix the Firefox problem. This will be added in BPS Pro 11.4.
// DB Quarantine Sort/Search Form - search all DB values/fields - top was 240px
echo '<div id="QSortSearch" style="float:right;margin:0px 110px 15px 0px;">';
echo '<form name="QuarantineSearchForm" action="admin.php?page=bulletproof-security/admin/quarantine/quarantine.php" method="post">';
wp_nonce_field('bulletproof_security_quarantine_search');
echo '<input type="text" name="QSearch" class="regular-text-short-fixed" style="margin:0px 5px 0px 0px; "value="" />';
echo '<input type="submit" name="Submit-Quarantine-Search" value="'.esc_attr('Sort|Search', 'bulletproof-security').'" class="button bps-button" />';
echo '</form>';
echo '</div>';
echo '<div style="clear:both;"></div>';
