Environment variables no longer work in custom project .includes file

Hello,

I updated to QtCreator 6.0.2 yesterday (by updating to Ubuntu 22.04), and it seems that environment variables can no longer be used in the project .includes file as before. I used to add for example a line

${ROOTSYS}/include

(with older versions it was $$(ROOTSYS)/include) in order for code completion to work with my code based on the ROOT framework. I don't know if the syntax has changed (I could not find any mention anywhere), but all variants of '${}', '$${}', '$()' have been tried and failed.

Strangely, not only environment variables but also QtCreator's own variable to find the build directory, i.e.

%{buildDir}

no longer works in order to find the header files generated during build time.

Both the environment variables and buildDir still work in the project build configuration, and compilation is not a problem.

Could you help me please?

Best regards