In Revit 2019 we do not see the full filter's name and we can not expand the window as in previous versions. This is important because in most cases we use the filter's name to define it's purpose so the filter's name get's very long. In addition we work with a big amount of filters so this list gets very long as well and often you will have a large list with similar filter's name, where only the last words vary but you can not see them in this view.
I request Revit team for the filter dialog box resize so we would be able to see the filternames in full.