Building Qt on Windows with a multi-config build fails with missing dll

I'm trying to build Qt from sources on Windows/MSVC. I'm using a multi-config release+debug build, so that I can have compatible Qt versions for both DEBUG and _NDEBUG CRTs.

I'm using the following commands:

cmake -S qtbase -B build-qtbase "-DCMAKE_GENERATOR=Ninja Multi-Config" "-DCMAKE_CONFIGURATION_TYPES=Release;Debug"
cmake --build build-qtbase --config Release
cmake --build build-qtbase --config Debug

The last command fails when trying to execute rcc.exe during the build. Apparently, the tool ( when built for the non-default configuration) is placed in the build-qtbase/bin/Debug directory, while the required Qt DLLs are in build-qtbase/bin, so the dynamic loader can't find them.

Is this a bug? Is there a different way to build Qt for Windows?