i can confirm this. webserver os: ubuntu 12.04.2 LTS, php 5.5.1rc1, osticket 1.9.4 rc5and i get this not just in the closed tickets pane. it's in any view, open, overdue,closed.even if i only select 1 ticket, i'm unable to close and unable to change status. if i go into the ticket, then i can change status, or delete the ticket without problems.this is connecting to the ticket system from a windows 8.1 machine, using internet explorer 11.0.9600.17280from the same windows machine, using google chrome Version 38.0.2125.104 m,i can select multiple tickets and change their status, or delete them, again without any problems.so it would appear to be an internet explorer compatibility issue.the multiple ticket delete request appears to reach the server without any problems. php error log entry from the osticket webserver, when i tried to delete 3 overdue tickets from internet explorer84.45.154.103 - - "GET /scp/ajax.php/tickets/status/delete?count=3&_uid=1414504755532 HTTP/1.1" 200 1194 "http://help.scl.co.uk/scp/tickets.php?status=overdue" "Mozilla/5.0 (Windows NT 6.1; Trident/7.0; rv.0) like Gecko"the same request from google chrome does not create any php error log entry.