SourceMaps do not show properly

I created a new Vue.js project with the latest vue-cli. After that I served that template project through webpack.

Without any modifications, the source maps to the two components (App.vue and HelloWorld.vue) appear fine in Chrome and Firefox. They are located at

• webpack:///HelloWorld.vue?140d

• webpack:///App.vue?234e

These source maps show up fine in Chrome and Firefox at their respective position, but are missing in Safari. Safari for some reason only shows files that are in some subfolder under webpack://.

The source maps in these subfolders are available but they are next to useless, since they are not the original source. Those exist in the root.

For example, webpack:///./src/components/HelloWorld.vue?f177 does show up.