When the PageStack is not in a ConditionalLayout, but in Layouts (as the default layout), it also doesn't work. Initially the PageStack may show, but when switching layouts and going back, things get messed up and the PageStack is gone (or its Pages show, but no back button in toolbar).
When the PageStack is not in a ConditionalLayout, but in Layouts (as the default layout), it also doesn't work. Initially the PageStack may show, but when switching layouts and going back, things get messed up and the PageStack is gone (or its Pages show, but no back button in toolbar).