qmllint: search in directory not working?

I tried current dev.

Foo.qml:

import QtQml 2.15

QtObject {
    property int x: 5
}

and Main.qml in the same directory:

import QtQuick 2.15

Rectangle {
    Foo {
        x: "aaa"
        y: 5
    }
}

I expected error about not existing property "y" and wrong type of initializer of "x",
but got no output and 0 exit code.
While for example qmlscene report errors:

qmlscene Main.qml
file:///var/tmp/test_qml_simple/Main.qml:6 Cannot assign to non-existent property "y"

and if I removed "y" it will report about wrong type of initializer of "x".

I tried "qmllint Main.qml" and also "qmllint Foo.qml Main.qml".

I also I tried to put Foo.qml into module, and import explicitly.
But situation was the same not error about not existing property and "int" vs "string" for "x" init.