QML Nested Imports - some problems

this is a follow up to the discussions at https://bugreports.qt.io/browse/QTBUG-111763

Created a project to demonstrate the problems. see attached ekkeTestNested project.

structure of used qml files:

qml/Main.qml
    opens pages/HomePage.qml

HomePage.qml uses
    common/LabelTitle.qml
    common/FloatingActionButon.qml
    popups/AdminDialog.qml

AdminDialog uses
    common/LabelTitle.qml
    common/LabelSubheading.qml

URL: Ekke.Apps.Main

translations done for de

root qmldir:

module Ekke.Apps.Main
typeinfo ekkeTestNested.qmltypes
prefer :/qt/qml/Ekke/Apps/Main/
Main 254.0 qml/Main.qml
LabelTitle 254.0 qml/common/LabelTitle.qml
LabelSubheading 254.0 qml/common/LabelSubheading.qml
FloatingActionButton 254.0 qml/common/FloatingActionButton.qml
LabelBody 254.0 qml/common/LabelBody.qml
AdminDialog 254.0 qml/popups/AdminDialog.qml
HomePage 254.0 qml/pages/HomePage.qml

qmldir with

prefer :/qt/qml/Ekke/Apps/Main/

• generated into
• qml
• qml/common
• qml/pages
• qml/popups

all looks good

I'm also using QML_SINGLETON:
MyApp and DataManager
and a QML_ELEMENT
SettingsData

problems:
I have to add explicit import Ekke.Apps.Main into AdminDialog.qml, otherwise running the app:

HomePage.qml Type AdminDialog unavailable
AdminDialog.qml SettingsData is not a type

after adding the explicit import App runs OK

running the App, in HomePage the implicit import is working as expected,
but inside QtCreator I'm getting

Unknown component (M300)
for LabelTitle, FloatingActionButton, AdminDialog

doing an explicit import M300 is gone