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Type: Bug
Resolution: Done
Priority: P1: Critical
Fix Version/s: 5.15.9, 6.2.3, 6.3.0 Alpha, 6.4.0 Beta1
Affects Version/s: 5.15.2, 6.2.1
Component/s: GUI: Basic Input System (keyboard, mouse, touch), Quick: Mouse Touch and Tablet input
Labels:
- Reported_by_support_standard
Environment:
macOS 12.0.1 Monterey
Qt 5.15.2, 6.2.1

Platform/s:

macOS
Commits:
2e11918456 (qt/qtbase/dev) 2e11918456 (qt/tqtc-qtbase/dev) 58226a8b62 (qt/qtbase/6.2) a21439787c (qt/qtbase/6.3) 58226a8b62 (qt/tqtc-qtbase/6.2) a21439787c (qt/tqtc-qtbase/6.3) 08bdf345d1 (qt/tqtc-qtbase/5.15)

After update to macOS Monterey scrolling with touch pad is broken.

When swiping touch pad with 2 fingers, view is scrolled in correct direction. But at the moment you raise your fingers, scrolling position unexpectedly jumps back almost to the position where scroll was started.

Reproduces with Qt 5.15.2 and with 6.2.1.

import QtQuick
import QtQuick.Controls
import QtQuick.Window

ApplicationWindow {
    width: 640
    height: 480
    visible: true
    title: qsTr("Monterey scrolling issue")

    ListView {
        id: listView
        anchors.fill: parent
        spacing: 3
        boundsBehavior: ListView.StopAtBounds
        model: 255

        delegate: Rectangle {
            border.width: 1
            border.color: "black"

            readonly property real tint: ((256 - 10 * (1 + index)) % 256) / (256)
            color: Qt.rgba(tint, tint, tint, 1)
            width: listView.width
            height: 50

            Text {
                anchors.centerIn: parent
                text: index
                color: (tint > 0.4) ? "black" : "white"
            }
        }
    }
}