Im connect custom attributes in profile service AD item (homePhone, CellPhone), after sync they are shown in profiles (private sites). Then Im add this properties in display templates of search results and add it in type of results - nothing in search results. I doing some tests, my parameters in display templates gets null. Why its working in private sites, but in search results not?
In search result, its seems like:
Work phone: 1000
All 3 attributes in 1 display template, configuring correctly. How you can see work phone correctly shown, because hes default in profile service.