LinkBack collapse/expand fails on showthread

On the showthread template where LinkBacks are listed we are given the ability to collapse the block of LinkBacks. They do collapse, but when you navigate away from the page (e.g. to another page in the same thread) the LinkBack block is expanded again. This is something I can do without for threads with over 100 LinkBacks. Any guidance on what I should do?

Please try to modify functions_vbseo_hook.php file:
FIND:

PHP Code:

global $vbseolinkbacks, 


REPLACE WITH:

PHP Code:

global $vbseolinkbacks, $vbcollapse, 


Fixed. Thank you Oleg.