QtQuick SpinBox doesn't open numpad on Android

QtQuick SpinBox should open virtual numpad as a default when selecting to edit value. Now it opens full keyboard even only numbers are accepted to spinbox. For TextField it's possible to open numpad automatically when setting inputMethodHint to Qt.ImhFormattedNumbersOnly. But it's impossible to set inputMethod to spinbox. Other things noticed might go close with the issue: it's not possible to set validator to spinbox and SpinBoxStyle was not accessible.