Hi there! And thanks for Processwire!
Another bug found for fields of type FieldtypePage. There's a "custom find" section in the "input" tab allowing to select several conditions for finding pages which will be included into thepages listing. This feature doesn't find any page. Tried to use "template" and "id" conditions, always no result. Fortunately, the "template + additional templates" section works fine.
My PW is 3.0.77. Hope that helps, and thanks in advance!