Steps to replicate the issue (include links if applicable):
load https://de.wikipedia.org/wiki/Wikipedia_Diskussion:WikiProjekt_%C3%96sterreichische_Denkmallisten#Erweiterung_Denkmallisten_um_Shapes
- some of the maps are rendered ok, other are left blank
- purging does not help, edit/save does not help
- in edit-mode / preview all the maps are rendered ok
What happens?:
- the console shows bad requests for some of the maps, e.g.:
GET https://maps.wikimedia.org/img/osm-intl,a,48.197763,16.252246,150x150.png?lang=de&domain=de.wikipedia.org&title=Wikipedia+Diskussion:WikiProjekt+Österreichische+Denkmallisten&revid=228582629&groups=_ede017266a94ba5ffd829df524863e490507515e
[HTTP/2 400 Bad Request 231ms]
- using the url above, I get the reply: Maximum zoom is 19 - but my maps are without explicit zoom-parameter
- acc. to https://www.mediawiki.org/wiki/Help:Extension:Kartographer#%3Cmapframe%3E it is legal to omit parameter zoom: When zoom is not specified, Kartographer applies a best-guess automatic zoom level based on the position of any markers or geoshapes in the map.
What should have happened instead?:
- rendering of syntactically correct maps should work stable.
- some description would be helpful on how to overcome this issue
Other information (browser name/version, screenshots, etc.):
- Firefox and chrome