Behodar:
Ticket logged with vendor when version X was current. Vendor then releases version Y. Issue confirmed to still exist in version Y. Ticket updated with comment that it's still broken in Y. Six months later, the vendor closes the ticket with "this is for version X which is now out of support". Latest patch update for version Y still exhibits the issue.
Now the vendor's being obtuse. The original ticket was "If you go to the list of items, then switch to e.g. page 3, open an item, then click Back, it returns you to page 1 instead of page 3." There was a note, intended to aid with troubleshooting, stating that the URL still includes "?page=3" so it's "trying" to work, but failing.
When I reopened the ticket, they closed it again with "we don't use query strings any more". They've homed in on an implementation detail and ignored the actual issue: that it goes to the wrong page.
