1 files changed, 14 insertions, 0 deletions
diff --git a/src/kitemviews/kfileitemmodel.cpp b/src/kitemviews/kfileitemmodel.cpp
index a0f9305cb..de3c3eb22 100644
--- a/src/kitemviews/kfileitemmodel.cpp
+++ b/src/kitemviews/kfileitemmodel.cpp
@@ -486,6 +486,18 @@ bool KFileItemModel::setExpanded(int index, bool expanded)
             m_urlsToExpand.insert(url);
         }
     } else {
+        // Note that there might be (indirect) children of the folder which is to be collapsed in
+        // m_pendingItemsToInsert. To prevent that they will be inserted into the model later,
+        // possibly without a parent, which might result in a crash, we insert all pending items
+        // right now. All new items which would be without a parent will then be removed.
+        dispatchPendingItemsToInsert();
+
+        // Check if the index of the collapsed folder has changed. If that is the case, then items
+        // were inserted before the collapsed folder, and its index needs to be updated.
+        if (m_itemData.at(index)->item != item) {
+            index = this->index(item);
+        }
+
         m_expandedDirs.remove(targetUrl);
         m_dirLister->stop(url);
 
@@ -500,7 +512,9 @@ bool KFileItemModel::setExpanded(int index, bool expanded)
             ItemData* itemData = m_itemData.at(childIndex);
             if (itemData->values.value("isExpanded").toBool()) {
                 const KUrl targetUrl = itemData->item.targetUrl();
+                const KUrl url = itemData->item.url();
                 m_expandedDirs.remove(targetUrl);
+                m_dirLister->stop(url);     // TODO: try to unit-test this, see https://bugs.kde.org/show_bug.cgi?id=332102#c11
                 expandedChildren.append(targetUrl);
             }
             ++childIndex;