Crash when exporting to image or pdf

[suavselrep]

What is the bug or the crash?

Qgis crash when trying to export as an image or a pdf

Steps to reproduce the issue

I've tried with the Openstreetmap XYZ layer by default or a WMS layer (Google or IGN)
Go to export as image.
No changes to the DPI or Resolution or any options.
When saving no matter the image format it crash.
Same with export to pdf.
Same without georeferencing.

It's a fresh install on my home computer, at work on another computer running the same version but on windows 10, I can generate georeferenced .tiff image just fine using the sames sources.

The crash report :

Python Stack Trace
Windows fatal exception: access violation

Current thread 0x00001f84 (most recent call first):

Stack Trace

QLineEdit::text :
QgsExtentWidget::outputExtent :
QgsExtentGroupBox::outputExtent :
QgsMapSaveDialog::applyMapSettings :
QgsMapSaveDialog::onAccepted :
QgisApp::identifyMapTool :
QObject::qt_static_metacall :
QMetaObject::activate :
QDialogButtonBox::event :
QObject::qt_static_metacall :
QMetaObject::activate :
QAbstractButton::clicked :
QAbstractButton::click :
QAbstractButton::mouseReleaseEvent :
QWidget::event :
QApplicationPrivate::notify_helper :
QApplication::notify :
QgsApplication::notify :
QCoreApplication::notifyInternal2 :
QApplicationPrivate::sendMouseEvent :
QWidgetRepaintManager::updateStaticContentsSize :
QWidgetRepaintManager::updateStaticContentsSize :
QApplicationPrivate::notify_helper :
QApplication::notify :
QgsApplication::notify :
QCoreApplication::notifyInternal2 :
QGuiApplicationPrivate::processMouseEvent :
QWindowSystemInterface::sendWindowSystemEvents :
QEventDispatcherWin32::processEvents :
QWindowsGuiEventDispatcher::processEvents :
QEventLoop::exec :
QCoreApplication::exec :
main :
BaseThreadInitThunk :
RtlUserThreadStart :

QGIS Info
QGIS Version: 3.40.4-Bratislava
QGIS code revision: 4dd7d7e
Compiled against Qt: 6.8.1
Running against Qt: 6.8.1
Compiled against GDAL: 3.10.2
Running against GDAL: 3.10.2

System Info
CPU Type: x86_64
Kernel Type: winnt
Kernel Version: 10.0.26100

Versions

Version de QGIS	3.40.4-Bratislava
Révision du code	4dd7d7e9
Bibliothèques
Version de Qt	6.8.1
Version de Python	3.12.9
GDAL version	3.10.2
Version de Proj	9.5.1
Version de la base de données du registre EPSG	v11.022 (2024-11-05)
Version de GEOS	3.13.0-CAPI-1.19.0
Version de SQLite	3.46.1
Version de PDAL	2.8.3
Version du client PostgreSQL	unknown
Version de SpatiaLite	5.1.0
Version de QWT	6.3.0
Version de QScintilla2	2.14.1
Version de l'OS	Windows 11 Version 24H2
Extensions Python actives
db_manager	0.1.20
grassprovider	2.12.99
MetaSearch	0.3.6
processing	2.12.99

Supported QGIS version

• I'm running a supported QGIS version according to the roadmap.

New profile

• I tried with a new QGIS profile

Additional context

No response

[agiudiceandrea]

@suavselrep, I didn't previously noticed that you have installed and you are using a Qt6 build (which is experimental) of QGIS LTR 3.40.4. Was it intended? I can also confirm the crash on Windows 11.
The issue has been already reported for macOS at #60415.

[suavselrep]

It wasn't intentionnal, since I first had the bug with the 3.42 Build, I grabbed the LTR on a mirror server and it seems I didn't pay enough attention and downloaded the qt6 Build.

After work I will try again with a fresh install.

[suavselrep]

Just tried with a non QT6 build and it works just fine. So I can affirm that the bug occurs only with QT6 build of 3.40 or 3.42 versions on Windows 11.