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Details

Type: Bug
Resolution: Fixed
Priority: P1: Critical
Fix Version/s: 6.5.4, 6.6.1, 6.7.0 FF
Affects Version/s: 6.5.3
Component/s: GUI: Window management
Labels:
- Reported_by_support_2H23
- reported_by_support_standard

Platform/s:

Windows
Commits:
614e0f1da (dev), 19471b215 (6.6), 581eecd59 (6.5)

Description

A minimal reproducer:

Have the following code as "SubWindow"

import QtQuick

Window {
    width: 400
    height: 300
    title: "Secondary window"
}

Then instantiate it in Main.qml:

import QtQuick
import QtQuick.Controls

ApplicationWindow {
    id: window
    width: 600
    height: 400
    visible: true

    Button {
        text: "Open secondary window"
        onClicked: secondary_window.show()
    }

    SubWindow{
        id: secondary_window
    }
}

Run application and click button, a second Window pops up.
In Qt 6.5.2: Geometry of the second Window is independent from the main Window. Moving/resizing the main Window does not influence the second Window by any means.
In Qt 6.5.3: Moving/resizing the main Window weirdly resizes the second Window. The behavior is totally unexpected and may cause crash in certain circumstances (reportedly QWindowsWindow::savedDpi).

Attachments

Issue Links

blocks

QTBUG-119319 Resizing or moving main window causes any non modal dialogs that are open to shrink

Closed

is duplicated by

QTBUG-119374 Error with child window

Closed

QTCREATORBUG-30172 Log window get moved and resized when moving qt creator window

Closed

relates to

QTBUG-106483 Moving a window to another screen (different DPI) using keyboard shortcuts while a menu is open has unexpected behavior

Open

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For Gerrit Dashboard: QTBUG-117779
#	Subject	Branch	Project	Status	CR	V
510660,3	Revert "Windows QPA: Move transient children with a window move"	dev	qt/qtbase	Status: MERGED	+2	0
510696,2	Revert "Windows QPA: Move transient children with a window move"	6.6	qt/qtbase	Status: MERGED	+2	0
512439,2	Revert "Windows QPA: Move transient children with a window move"	6.5	qt/qtbase	Status: MERGED	+2	0