can't create a modules group

Please see https://www.jetbrains.com/help/idea/modules.html.

To sort out modules, you should give them fully qualified names. Support for qualified names is enabled by default in IntelliJ IDEA of version 2017.3 and higher, so no further configuration is required. For example, if you want to group all CDI modules, you can add the cdi. prefix to their names.

Thanks!

If your project uses Gradle and none-Gradle modules this it completely broken. Every time a build.gradle changes it loose the grouping for all your modules.

Hi.

we have a related issue, please follow: https://youtrack.jetbrains.com/issue/IDEA-153496