@Gehel In fact, the result you got isn't an issue imho, it's the solution @IGW (the author of the issue) and I suggested earlyer in this ticket.

Same problem on frwiki, got this error in my JS console in my firefox 53.0.3 when trying to display a maplink on fr:Paris:

We have the same issue reported currently on frwiki from contributors who don't understand why the links to OSM/GMaps/... place a marker shifted from several kilometers.

Done in https://fr.wikipedia.org/w/index.php?diff=137531683

@Esanders Yes, but this other editor works only inside the visual-editor, is very small, and stores all the GeoJSON code directly inside the page (which is quite awful when creating maps with a lot of elements on it). KartoEditor works on maps stored in the namespace Data from Commons (importable from every wiki), and has a lot more customization options (color, size, icons, opacity, popup, ...) 🐱.

@Tgr That's fine on frwiki now, thanks!

The same as Vituzzu, on frwiki I see now all the sub-options even if the option is not checked. Furthermore, It seems that all the options are repeated twice (see attachment).