This is a minimal example for IDEA-175469.

A profile from the projects root pom should be activated automatically if a file src/main/resources/important-file.txt is present. This profile should copy an arbitrary file from a dependency to the output directory (using wicket as an example is only due to my lazyness, it could be any dependency).

This file needed for activation is present in the root module. It is not present in the submodule maven-submodule.

Running mvn clean generate-resources copies the file only for the root project. As expected.

Using the IntelliJ-Button "Generate Sources and Update Folders For All Projects" is expected to behave the same way as maven. But the file is copied for both modules.