Foreign generation fails with namespace

namespace stuff
{
class A
{
	Q_GADGET
	Q_CLASSINFO("QML.Element", "flupp")
	public:
	enum class Flupp {
		Flipp = 44
	};
	Q_ENUM(Flupp)
};
}

[40/62] Automatic QML type registration for target ui_qml
Warning: ui_base_ui_qml.h:: A is declared as foreign type, but cannot be found.
[49/62] Building CXX object CMakeFiles/ui_qml.dir/ui_base_ui_qml.cpp.o
FAILED: CMakeFiles/ui_qml.dir/ui_base_ui_qml.cpp.o 
/usr/bin/clang++ -DQT_CORE_LIB -DQT_NETWORK_LIB -DQT_NO_DEBUG -DQT_QMLBUILTINS_LIB -DQT_QMLINTEGRATION_LIB -DQT_QML_LIB -I/tmp/o -I/home/andre/hg/QmlDummy -I/tmp/o/ui_qml_autogen/include -I/home/andre/hg/QmlDummy/base -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/include/QtQml/6.7.0 -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/include/QtQml/6.7.0/QtQml -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/include/QtCore/6.7.0 -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/include/QtCore/6.7.0/QtCore -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/include/QtCore -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/include -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/mkspecs/linux-g++ -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/include/QtQmlBuiltins/6.7.0 -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/include/QtQmlBuiltins/6.7.0/QtQmlBuiltins -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/include/QtQmlBuiltins -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/include/QtQml -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/include/QtQmlIntegration -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/include/QtNetwork -fPIC -MD -MT CMakeFiles/ui_qml.dir/ui_base_ui_qml.cpp.o -MF CMakeFiles/ui_qml.dir/ui_base_ui_qml.cpp.o.d -o CMakeFiles/ui_qml.dir/ui_base_ui_qml.cpp.o -c /tmp/o/ui_base_ui_qml.cpp
In file included from /tmp/o/ui_base_ui_qml.cpp:1:
/tmp/o/ui_base_ui_qml.h:9:17: error: unknown type name 'A'; did you mean 'stuff::A'?
    9 |     QML_FOREIGN(A)
      |                 ^
      |                 stuff::A
/home/andre/hg/AusweisApp2-build/libs/67/dist/include/QtQmlIntegration/qqmlintegration.h:156:28: note: expanded from macro 'QML_FOREIGN'
  156 |     using QmlForeignType = FOREIGN_TYPE; \
      |                            ^
/home/andre/hg/QmlDummy/base/base_enum.h:20:7: note: 'stuff::A' declared here
   20 | class A
      |       ^
1 error generated.
[50/62] Building CXX object CMakeFiles/ui_qml.dir/ui_qml_qmltyperegistrations.cpp.o
FAILED: CMakeFiles/ui_qml.dir/ui_qml_qmltyperegistrations.cpp.o 
/usr/bin/clang++ -DQT_CORE_LIB -DQT_NETWORK_LIB -DQT_NO_DEBUG -DQT_QMLBUILTINS_LIB -DQT_QMLINTEGRATION_LIB -DQT_QML_LIB -I/tmp/o -I/home/andre/hg/QmlDummy -I/tmp/o/ui_qml_autogen/include -I/home/andre/hg/QmlDummy/base -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/include/QtQml/6.7.0 -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/include/QtQml/6.7.0/QtQml -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/include/QtCore/6.7.0 -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/include/QtCore/6.7.0/QtCore -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/include/QtCore -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/include -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/mkspecs/linux-g++ -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/include/QtQmlBuiltins/6.7.0 -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/include/QtQmlBuiltins/6.7.0/QtQmlBuiltins -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/include/QtQmlBuiltins -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/include/QtQml -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/include/QtQmlIntegration -isystem /home/andre/hg/AusweisApp2-build/libs/67/dist/include/QtNetwork -fPIC -MD -MT CMakeFiles/ui_qml.dir/ui_qml_qmltyperegistrations.cpp.o -MF CMakeFiles/ui_qml.dir/ui_qml_qmltyperegistrations.cpp.o.d -o CMakeFiles/ui_qml.dir/ui_qml_qmltyperegistrations.cpp.o -c /tmp/o/ui_qml_qmltyperegistrations.cpp
In file included from /tmp/o/ui_qml_qmltyperegistrations.cpp:11:
/tmp/o/ui_base_ui_qml.h:9:17: error: unknown type name 'A'; did you mean 'stuff::A'?
    9 |     QML_FOREIGN(A)
      |                 ^
      |                 stuff::A
/home/andre/hg/AusweisApp2-build/libs/67/dist/include/QtQmlIntegration/qqmlintegration.h:156:28: note: expanded from macro 'QML_FOREIGN'
  156 |     using QmlForeignType = FOREIGN_TYPE; \
      |                            ^
/home/andre/hg/QmlDummy/base/base_enum.h:20:7: note: 'stuff::A' declared here
   20 | class A
      |       ^
1 error generated.
[52/62] Building CXX object CMakeFiles/ui_qml.dir/.rcc/qmlcache/ui_qml_qmlcache_loader.cpp.o
ninja: build stopped: subcommand failed.
LANG=C.utf8 ninja  14,93s user 0,95s system 622% cpu 2,550 total

#ifndef ui_base_ui_qml_H
#define ui_base_ui_qml_H
#include <QtQml/qqml.h>
#include <QtQml/qqmlmoduleregistration.h>

#include <base_enum.h>
struct AForeign{
    Q_GADGET
    QML_FOREIGN(A)
    QML_NAMED_ELEMENT(flupp)
};

#endif