1 files changed, 15 insertions, 4 deletions
diff --git a/src/widgets/itemviews/qtreeview.cpp b/src/widgets/itemviews/qtreeview.cpp
index b778ef9a47..6ab6576cbe 100644
--- a/src/widgets/itemviews/qtreeview.cpp
+++ b/src/widgets/itemviews/qtreeview.cpp
@@ -1448,7 +1448,8 @@ void QTreeViewPrivate::adjustViewOptionsForIndex(QStyleOptionViewItem *option, c
 void QTreeView::drawTree(QPainter *painter, const QRegion &region) const
 {
     Q_D(const QTreeView);
-    const QVector<QTreeViewItem> viewItems = d->viewItems;
+    // d->viewItems changes when posted layouts are executed in itemDecorationAt, so don't copy
+    const QVector<QTreeViewItem> &viewItems = d->viewItems;
 
     QStyleOptionViewItem option = d->viewOptionsV1();
     const QStyle::State state = option.state;
@@ -1947,7 +1948,7 @@ void QTreeView::mouseDoubleClickEvent(QMouseEvent *event)
         if (!style()->styleHint(QStyle::SH_ItemView_ActivateItemOnSingleClick, nullptr, this))
             emit activated(persistent);
 
-        d->pressedIndex = QModelIndex();
+        d->releaseFromDoubleClick = true;
         d->executePostedLayout(); // we need to make sure viewItems is updated
         if (d->itemsExpandable
             && d->expandsOnDoubleClick
@@ -2664,7 +2665,10 @@ QSize QTreeView::viewportSizeHint() const
   \since 4.2
   Expands all expandable items.
 
-  \warning: if the model contains a large number of items,
+  \note This function will not try to \l{QAbstractItemModel::fetchMore}{fetch more}
+  data.
+
+  \warning If the model contains a large number of items,
   this function will take some time to execute.
 
   \sa collapseAll(), expand(), collapse(), setExpanded()
@@ -2686,7 +2690,10 @@ void QTreeView::expandAll()
   A \a depth of -1 will expand all children, a \a depth of 0 will
   only expand the given \a index.
 
-  \warning: if the model contains a large number of items,
+  \note This function will not try to \l{QAbstractItemModel::fetchMore}{fetch more}
+  data.
+
+  \warning If the model contains a large number of items,
   this function will take some time to execute.
 
   \sa expandAll()
@@ -2751,6 +2758,9 @@ void QTreeView::collapseAll()
   \since 4.3
   Expands all expandable items to the given \a depth.
 
+  \note This function will not try to \l{QAbstractItemModel::fetchMore}{fetch more}
+  data.
+
   \sa expandAll(), collapseAll(), expand(), collapse(), setExpanded()
 */
 void QTreeView::expandToDepth(int depth)
@@ -3459,6 +3469,7 @@ int QTreeViewPrivate::indentationForItem(int item) const
 
 int QTreeViewPrivate::itemHeight(int item) const
 {
+    Q_ASSERT(item < viewItems.count());
     if (uniformRowHeights)
         return defaultItemHeight;
     if (viewItems.isEmpty())