No need to file a ticket, an solution is on the way. :D
a pre-release is available here. https://github.com/mendixlabs/list-view-controls/releases/tag/v1.3.5
Yes, I also faced same issue. {currentPageNumber} placeholder does not return correct value. It is returning total pages, not the current one.
I think there is some bug in the widget.
This seems like a bug. So you can file a support ticket for it, but do make sure that you have the latest version of the list view controls widget, because I found that I was using an older version and in a newer version my issues where solved.