If you sort the Holds waiting over x days, holds waiting, or holds with cancellation requests, then use the checkboxes on the left to select items to cancel, the number will not update and you can't cancel with the "cancel selected" button. If you change the "show x entries" to show all/a high enough number that all show, then it works.
Our library is experiencing this issue. It is very inconvenient to cancel a long list of holds 20 at a time. Any ideas for a resolution? Thank you, Sam Sowanick CBCPL