Example:

https://www.mediawiki.org/w/index.php?title=User:CKoerner_(WMF)/sandbox&oldid=2313964

The first map preview works as intended (rocket). The second (castle) does not display an image.

We could hardcode the list of all available markers in php, and update it when maki package changes. The list so far: this regex: /^(-number.*|-letter.*|\d\d?|[a-z])$/, or one of these constants:

aerialway, airfield, airport, alcohol-shop, america-football, art-gallery, bakery, bank, bar, baseball, basketball, beer, bicycle, building, bus, cafe, camera, campsite, car, cemetery, chemist, cinema, circle, circle-stroked, city, clothing-store, college, commercial, cricket, cross, dam, danger, dentist, disability, dog-park, embassy, emergency-telephone, entrance, farm, fast-food, ferry, fire-station, fuel, garden, gift, golf, grocery, hairdresser, harbor, heart, heliport, hospital, ice-cream, industrial, land-use, laundry, library, lighthouse, lodging, logging, london-underground, marker, marker-stroked, minefield, mobilephone, monument, museum, music, oil-well, park, park2, parking, parking-garage, pharmacy, pitch, place-of-worship, playground, police, polling-place, post, prison, rail, rail-above, rail-light, rail-metro, rail-underground, religious-christian, religious-jewish, religious-muslim, restaurant, roadblock, rocket, school, scooter, shop, skiing, slaughterhouse, soccer, square, square-stroked, star, star-stroked, suitcase, swimming, telephone, tennis, theatre, toilets, town, town-hall, triangle, triangle-stroked, village, warehouse, waste-basket, water, wetland, zoo

Moving off the sprint board - the Discovery team won't be able to finish this work at this time.

@MSantos do you know if it still crashes ?