Generated code outside of $(IntDir)

The code files generated by Qt tools (moc, rcc and uic) are created outside of the $(IntDir) if the path of the input file is somewhere above the project directory.
This seems to be caused by the usage of %(RelativeDir) inside the qt*.props files, as removing it seems to solve the problem. Unfortunately I can't distribute this modification to the other developers in my department, since the files are overwritten at startup.

The attached project is a minimal reconstruction of the error. The header file should be placed accordingly to the path used in the vcxproj.

VS Build output (translated from german):

1>Reading Qt configuration (C:\Qt\Qt5.11.2\5.11.2\msvc2017_64\bin\qmake.exe)
1>moc ..\..\..\..\..\QtDummy\QtDummy.h
1>moc_QtDummy.cpp
1>c1xx : fatal error C1083: File (source) cannot be opened: "..\QtDummy\moc_QtDummy.cpp": No such file or directory
1>The creation of the project "QtApplication.vcxproj" is finished -- ERROR.