It could be related to or duplicate of QTCREATORBUG-22535.

The resource files are not visible when the QtQuickCompiler is used. For example:

find_package(Qt5QuickCompiler)
qtquick_compiler_add_resources(RESOURCES untitled.qrc)

It works as expected without QtQuickCompiler:

qt5_add_resources(RESOURCES untitled.qrc)

It seems this is expected way [1] of using QtQuickCompiler, but the QtCreator doesn't show the files then. I am trying to use this approach in my project [2]. Please point me to right documentation if my cmake configuration is incorrect.

[1] https://felgo.com/doc/qt/qtquick-deployment/#compiling-qml-ahead-of-time
[2] https://github.com/DCGM/LAA-maps-editor/blob/master/CMakeLists.txt#L36