Merge pull request #5477 from ales-erjavec/fixes/variable-list-move

[FIX] listfilter: Bypass QListView.dropEvent

Author: janezd

Orange/widgets/utils/listfilter.py

@@ -1,4 +1,4 @@
-from AnyQt.QtWidgets import QListView, QLineEdit, QCompleter
+from AnyQt.QtWidgets import QListView, QLineEdit, QCompleter, QAbstractItemView
 from AnyQt.QtGui import QDrag
 from AnyQt.QtCore import (
     Qt, QObject, QEvent, QModelIndex,
@@ -85,6 +85,13 @@ def startDrag(self, supported_actions):
                     delslice(self.model(), s1, s2)
             self.dragDropActionDidComplete.emit(res)
 
+    def dropEvent(self, event):
+        # Bypass QListView.dropEvent on Qt >= 5.15.2.
+        # Because `startDrag` is overridden and does not dispatch to base
+        # implementation then `dropEvent` would need to be overridden also
+        # (private `d->dropEventMoved` state tracking due to QTBUG-87057 fix).
+        QAbstractItemView.dropEvent(self, event)
+
     def dragEnterEvent(self, event):
         """
         Reimplemented from QListView.dragEnterEvent