Steps to reproduce:

• Unzip the attached sample. It has two projects: 'sample-parent' project, with profile 'parent-profile' and 'sample-child' project with profile 'child-profile'
• Execute mvn install from command line for 'sample-parent' project and than for 'sample-child' project
• Open 'sample-child' project in IDEA

Expected behavior:
The 'Profiles' tree in 'Maven projects' tool window shows both 'parent-profile' and 'child-profile' profiles

Actual behavior:
The 'Profiles' tree in 'Maven projects' tool window shows only 'child-profile' profile, but not the 'parent-profile' profile, while you may run 'sample-child' with 'parent-profile' from command line (mvn install -P parent-profile)