When starting from the template project you need to remove line

sourceMaps = false

from

build.gradle.kts

and remove line

config.devtool = 'eval-cheap-source-map'

from

webpack.config.d/webpack.js

Maybe you should add a short Development/Debug chapter to the KVision Guide with information like this.

Good idea! https://kvision.gitbook.io/kvision-guide/part-1-fundamentals/setting-up#debugging

👍Nice!