QML application does not start if some QML modules are built static

I have a QML application that links two QML libraries that we develop ourselves. The libraries are created with qt_add_library(MyQtQuick STATIC) and qt_add_qml_module(MyQtQuick ...). However the application fails to start, with error:

QQmlApplicationEngine failed to load component ( in ::)
qrc:/MyQtQuickCellAna/qml/main.qml:149:9: Type FlickableScene unavailable ( in qrc:/MyQtQuickCellAna/qml/main.qml::)
qrc:/MyQtQuickCellAna/qml/FlickableScene.qml:28:1: module "MyQtQuick" plugin "MyQtQuickplugin" not found ( in qrc:/MyQtQuickCellAna/qml/FlickableScene.qml::)

When I remove STATIC from qt_add_library(MyQtQuick STATIC), everything works and the application starts.

The reason why I need to build MyQtQuick static is because it links a number of static libraries that are otherwise duplicate defines in the application.

Some of my specs:

• Qt: Version 6.5.1 built as a shared library, from sources
• Platforms: Linux, Windows

I found possibly related issues:

• https://bugreports.qt.io/browse/QTBUG-82598: Seems slightly related but is closed. Also does not mention cmake.
• https://bugreports.qt.io/browse/QTBUG-87005: Seems related but mentions a different error.