Now and in the past the patch set of Kartographer contains changes to lib/external/mapbox/style.css which are not wanted [1]
Example: https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Kartographer/+/691667/1
Log: https://libraryupgrader2.wmcloud.org/logs2/272688
Am not not sure which fixer is running here?