Tumbler does not load last element if model is 49, 98, 196, etc. in Qt 5.15

aabacus

Hi.

I'm trying to create a simple tumbler with 49 elements, but the last element is not loaded or, at least, is not visible until I scroll the tumbler. I could reproduce this with models of 49, 98, 196... elements

import QtQuick 2.15
import QtQuick.Window 2.15
import QtQuick.Controls 2.15

Window {
    id: __root
    visible: true
    width: 460;
    height: 640

    Tumbler {
        id: hoursTumbler
        anchors.fill: parent
        model: 49
        visibleItemCount: 3
        delegate: Text {
            opacity: 1.0 - (Math.abs(Tumbler.displacement) / (Tumbler.tumbler.visibleItemCount / 2))
            font.pixelSize: hoursTumbler.height * 0.36
            text: index
        }
    }
} //window

Here is a running example in kde.org's online editor
https://tinyurl.com/yd8hchsf

What could be causing this?

aabacus

Hi again.

This same behavior is described in this bug report: https://bugreports.qt.io/browse/QTBUG-90479
But how is Tumbler related to PathView?

I tried to load the model dynamically, to change the currentIndex dynamically, etc. but I get the same result.
Do you have any idea or workaround?

Thanks!