Maven ui test APTPropertiesPageTest fails on mismatch of expected and existing sources directories

What i do not know if this is intended change or just side effect.
Directory is hidden, I am not aware of any hidden directory as sources.
So question is: is this expected behaviour?

Related test run:
https://dev-platform-jenkins.rhev-ci-vms.eng.rdu2.redhat.com/job/maven.itests/515/testReport/

Local debug screenshot:

This directory is empty and if deleted it did not break local tests.

jkopriva@redhat.com