Description

After performing File | Open | myProject), IntelliJ loads only one module, Module A, instead of opening the whole project with all the modules

Project Structure:

Project:    - Module A    - Module B    - Module C    - Module D

Workaround

- File | Close Project

- Close the IDE

- Remove all .iml files from your root project directory and all modules

- Open a project in the IDE by selecting a root folder

If the problem remains, contact JetBrains support at https://intellij-support.jetbrains.com/hc/en-us/requests/new as an issue may vary depending on a project configuration