qmllint library search regression

I tried to move from a1c91787264f6f535b5cf094b57ee53058856df4 (Fri Jun 19) to current dev (not it is 86379e265e19a078545306d93c59b0d92c04920a).

With a1c91787264f6f535b5cf094b57ee53058856df4 I can run qmllint from dev branch against 5.15 code with such command:
qmllint -I /usr/lib/qt/qml -I /usr/lib/qt/qml/QtQml

import QtQuick.Controls 2.15
import QtQuick 2.15

Rectangle {
    Button {
        text: "AAAA"
        onClicked: console.log("hi")
    }
}

all worked fine. If I changed onClicked to onClickedXYZ it will report unknown signal.

But with qmllint 86379e265e19a078545306d93c59b0d92c04920a, I got:

$ ./qtbase/bin/qmllint -I /usr/lib/qt/qml -I /usr/lib/qt/qml/QtQml /tmp/Test.qml 
Warning: QQuickButton was not found. Did you add all import paths?
Warning: no matching signal found for handler "onClicked" at /tmp/Test.qml:7:9
        onClicked: console.log("hi")
        ^^^^^^^^^

I tried to add all paths like this:

$ ./qtbase/bin/qmllint -I /usr/lib/qt/qml -I /usr/lib/qt/qml/QtQml -I /usr/lib/qt/qml/QtQuick/Templates.2  -I /usr/lib/qt/qml/QtQuick/Controls.2 /tmp/Test.qml 
$ ./qtbase/bin/qmllint -I /usr/lib/qt/qml -I /usr/lib/qt/qml/QtQml -i /usr/lib/qt/qml/QtQuick/Templates.2/plugins.qmltypes  -i /usr/lib/qt/qml/QtQuick/Controls.2/plugins.qmltypes /tmp/Test.qml

but still no success.

So may be qmltypes format changed, I tried qmltypes from the same source code base
as qmllint, but without success, if you don't use `-I` and `-i` I got:

$ ./qtbase/bin/qmllint /tmp/Test.qml
Warning: Button was not found. Did you add all import paths?
Warning: no matching signal found for handler "onClicked" at /tmp/Test.qml:7:9
        onClicked: console.log("hi")
        ^^^^^^^^^

If I add all possible paths:

./qtbase/bin/qmllint -i qtbase/qml/QtQml/WorkerScript/plugins.qmltypes -i qtbase/qml/QtQml/plugins.qmltypes -i qtbase/qml/QtQml/Models/plugins.qmltypes -i qtbase/qml/QtQuick/Shapes/plugins.qmltypes -i qtbase/qml/QtQuick/plugins.qmltypes -i qtbase/qml/QtQuick/Layouts/plugins.qmltypes -i qtbase/qml/QtQuick/Templates/plugins.qmltypes -i qtbase/qml/QtQuick/Particles/plugins.qmltypes -i qtbase/qml/QtQuick/LocalStorage/plugins.qmltypes -i qtbase/qml/QtQuick/NativeStyle/plugins.qmltypes -i qtbase/qml/QtQuick/Controls/plugins.qmltypes -i qtbase/qml/QtQuick/Controls/Material/impl/plugins.qmltypes -i qtbase/qml/QtQuick/Controls/impl/plugins.qmltypes -i qtbase/qml/QtQuick/Controls/Fusion/impl/plugins.qmltypes -i qtbase/qml/QtQuick/Controls/Imagine/impl/plugins.qmltypes -i qtbase/qml/QtQuick/Controls/Default/impl/plugins.qmltypes -i qtbase/qml/QtQuick/Controls/Universal/impl/plugins.qmltypes -i qtbase/qml/builtins.qmltypes -i qtbase/qml/Qt/labs/wavefrontmesh/plugins.qmltypes -i qtbase/qml/Qt/labs/animation/plugins.qmltypes -i qtbase/qml/Qt/labs/settings/plugins.qmltypes -i qtbase/qml/Qt/labs/folderlistmodel/plugins.qmltypes -i qtbase/qml/Qt/labs/sharedimage/plugins.qmltypes -i qtbase/qml/Qt/labs/qmlmodels/plugins.qmltypes -i qtbase/qml/QtTest/plugins.qmltypes -i qtdeclarative/tools/qml/qml.qmltypes -i qtdeclarative/tools/qmltime/qmltime.qmltypes -i qtdeclarative/src/qml/plugins.qmltypes -i qtdeclarative/src/qmlworkerscript/plugins.qmltypes -i qtdeclarative/src/quickshapes/plugins.qmltypes -i qtdeclarative/src/imports/wavefrontmesh/plugins.qmltypes -i qtdeclarative/src/imports/layouts/plugins.qmltypes -i qtdeclarative/src/imports/localstorage/plugins.qmltypes -i qtdeclarative/src/imports/settings/plugins.qmltypes -i qtdeclarative/src/imports/folderlistmodel/plugins.qmltypes -i qtdeclarative/src/imports/sharedimage/plugins.qmltypes -i qtdeclarative/src/imports/labsmodels/plugins.qmltypes -i qtdeclarative/src/imports/labsanimation/plugins.qmltypes -i qtdeclarative/src/quick/plugins.qmltypes -i qtdeclarative/src/qmlmodels/plugins.qmltypes -i qtdeclarative/src/particles/plugins.qmltypes -i qtquickcontrols2/src/quicktemplates2/plugins.qmltypes -i qtquickcontrols2/src/quickcontrols2impl/plugins.qmltypes -i qtquickcontrols2/src/imports/controls/imagine/plugins.qmltypes -i qtquickcontrols2/src/imports/controls/imagine/impl/plugins.qmltypes -i qtquickcontrols2/src/imports/controls/material/plugins.qmltypes -i qtquickcontrols2/src/imports/controls/material/impl/plugins.qmltypes -i qtquickcontrols2/src/imports/controls/fusion/plugins.qmltypes -i qtquickcontrols2/src/imports/controls/fusion/impl/plugins.qmltypes -i qtquickcontrols2/src/imports/controls/default/plugins.qmltypes -i qtquickcontrols2/src/imports/controls/default/impl/plugins.qmltypes -i qtquickcontrols2/src/imports/controls/universal/plugins.qmltypes -i qtquickcontrols2/src/imports/controls/universal/impl/plugins.qmltypes -i qtquickcontrols2/src/imports/nativestyle/plugins.qmltypes -i qtquickcontrols2/src/quickcontrols2/plugins.qmltypes /tmp/Test.qml
Warning: QQuickItem was not found. Did you add all import paths?

So it find Button somehow, but can not find QQuickItem, though I add qmltypes execept from tests.