When using the Maplink template and using OSM data via wikidata, features should populate based on OSM's data. Whether this works has been spotty at best in recent months. I could find no instance of this feature working perfectly, so here are some examples where the functionality comes up short: https://en.wikipedia.org/w/index.php?title=User:BMACS1002/sandbox&oldid=1037627830
I saw one bug report that addressed an aspect of this problem but also said it might be fixed by defining the zoom parameter, which did slightly change one test case, but didn't fix it, as indicated below.
New Jersey Route 23: Completely broke, no indication that there's any data at all
U.S. 6 (NY): Mostly broke, but when zoom is defined it centers on the object
New Jersey Route 7: No image when outside the viewer, but once within works as expected
New Jersey County Route 506: An example where data from Commons works and appears as expected, but data from OSM doesn't show at all
New Jersey Route 12: partially showing in all views
New Jersey Route 13: Feature shows in its entirety before clicking on the map, but doesn't show when in the viewer
New Jersey Route 18: Works in all circumstances when viewed on its own page, but the preview doesn't show on this page
When looking at the page source in Chrome's developer tools, the code showed exactly the amount of data that was displayed (that being in most cases none at all), so this is not a problem with the browser.