To reproduce: * Run sh start-ill-dev.sh (copy from https://github.com/ammopt/koha-ill-dev/blob/master/start-ill-dev.sh) * Create 1 request in some library * Go back to the table, pick a different library from the left-side filters but dont press the 'Search' button * Click on any column header to sort, notice the requests disappears (because the library filter value is being applied)