File with .includes extension not considered in generic project.

I've been using generic project with paths to headers declared in the .includes file for quite some time. But after an update to current version (I'm not sure about my original version, probably 4.9.x) the included paths are not reflected by the Clang code model. The lines where those headers are included are marked with the following error: "'xy.hpp' file not found". The files are not found  even with Clang model unticked in the plugins menu. Please find a minimal project to reproduce my issue attached.

Re-opened: The issue persists in 4.11.0-RC1 for me. I've attached a screenshot showing the related minimal project.