Template:Maplink does not display thumbnail with frame-align=center setting. The frame-align=center setting is maily used in infoboxes (see https://en.wikipedia.org/wiki/Interstate_70_in_Pennsylvania for example).
Sample page - two maps on the web, only one in Android app: https://en.wikipedia.org/wiki/User:Kozuch/Bug1
Using latest Android production app.
The Android team is not sure if this is a page library or parsoid issue, so sending to the relevant teams to investigate.
This is because the html is missing its css. The html for center elements are not floated, just inline <a> element. normally that makes it sized 0x0
This might be fixed next week because of T157512: Use an <img> element inside the <a> link rather than a background image to facilitate printing which will always have a natural size (no matter if the CSS is present or not).
This might be fixed next week because of
Nope still broken. But honestly i have lost track of where (which api) each app retrieves its Content from.
Parsoid gets it correct: https://en.wikipedia.org/api/rest_v1/page/html/User%3AKozuch%2FBug1
PCS??? seems out of sync with reality: https://en.wikipedia.org/api/rest_v1/page/mobile-html/User%3AKozuch%2FBug1
It seems to me that this is solely due to missing page-specific ResourceLoader styleonly modules.
Unlike https://en.wikipedia.org/api/rest_v1/page/html/ the mobile version https://en.wikipedia.org/api/rest_v1/page/mobile-html doesn't include these Resourceloader style modules. The first does so by loading: https://en.wikipedia.org/w/load.php?modules=mediawiki.skinning.content.parsoid%7Cmediawiki.skinning.interface%7Csite.styles%7Cmediawiki.page.gallery.styles%7Cext.cite.style%7Cext.cite.styles%7Cext.kartographer.style%7Cext.kartographer.style&only=styles&skin=vector
So it is logical that it doesn't work in that case. Definitely not a Kartographer problem.