Regression in 6.5.2 that is fixed >=6.5.3.
https://bugreports.qt.io/browse/QTBUG-115757
https://github.com/qutebrowser/qutebrowser/issues/7827

https://github.com/qt/qtwayland/commit/02e9e0a2d4538eb2b3c26d3137228f8f501bcf7f
From: David Edmundson <davidedmundson@kde.org>
Date: Wed, 7 Jun 2023 22:12:15 +0100
Subject: [PATCH] client: Fix crash on dnd updates after client facing drag
 ends

A platform drag and a application-facing drag have two different
lifespans.

The platform drag lasts until all mimedata is transferred and the client
receiving the drops marks it as finished.

The application facing QDrag lasts until the client deletes it. We can
get a crash if we get updates during this time.

The drop event is guarded, but not the action negotiation.

Fixes: QTBUG-115757
Change-Id: Ib9c047f04d65883105d4cd3f169637d0e038a63f
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
(cherry picked from commit 22daca49b807fefba58113a06b86df4274e49f62)
Reviewed-by: David Edmundson <davidedmundson@kde.org>
--- a/src/client/qwaylanddatadevice.cpp
+++ b/src/client/qwaylanddatadevice.cpp
@@ -97,6 +97,9 @@ bool QWaylandDataDevice::startDrag(QMimeData *mimeData, Qt::DropActions supporte
     connect(m_dragSource.data(), &QWaylandDataSource::cancelled, this, &QWaylandDataDevice::dragSourceCancelled);
     connect(m_dragSource.data(), &QWaylandDataSource::dndResponseUpdated, this, [this](bool accepted, Qt::DropAction action) {
             auto drag = static_cast<QWaylandDrag *>(QGuiApplicationPrivate::platformIntegration()->drag());
+            if (!drag->currentDrag()) {
+                return;
+            }
             // in old versions drop action is not set, so we guess
             if (m_dragSource->version() < 3) {
                 drag->setResponse(accepted);