This repository contains a bug fix for the leaflet measure plugin https://github.com/ljagis/leaflet-measure/ that had issues when running on leafletjs version 1.8.0 or higher. This solution comes from ljagis/leaflet-measure#171 (comment)
https://wisnubakso.github.io/leaflet-measure-for-leaflet-1.8.0-higher-patch-1/