Custom page sizes

In Draw 2019, when I save a custom page size, the new size subsequently appears in the available page sizes list, but none of the page size's properties - height, width, or resolution -  appears with it. So, the custom page size has the name I gave it, but retains the default page size's properties, which, of course, renders the saved page size useless. In Draw X8, a saved page's properties as well as its name are in effect immediately upon selection of the size. Any ideas?

[In case it matters, I have not imported any workspaces into Draw 2019. The few changes I've made have been made to the default workspace.]