F1 documentation confused by renamed 'import … as …'

Documentation viewer a.k.a. context help a.k.a. F1 is getting confused when looking up qualified components of renamed QML imports.

Steps to reproduce

1. import QtQuick.Controls 2.15 as QQC2
2. QQC2.Label {}
3. Place cursor on a Label
4. Press F1 / open context help

Expected result

Opened documentation for Label QML Type from QtQuick.Controls 2.15

Actual result

QML..QQC2, QML.QQC2

No documentation available.