From fbbe3c6385eb258b1c27685cdbc805a4e66b2f87 Mon Sep 17 00:00:00 2001
From: David Rosca <nowrep@gmail.com>
Date: Sun, 4 Feb 2018 15:58:36 +0100
Subject: [PATCH] TabTreeModel: Ignore dropping child on its parent

---
 src/lib/tabwidget/tabtreemodel.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/lib/tabwidget/tabtreemodel.cpp b/src/lib/tabwidget/tabtreemodel.cpp
index b5e272494..3df9c7534 100644
--- a/src/lib/tabwidget/tabtreemodel.cpp
+++ b/src/lib/tabwidget/tabtreemodel.cpp
@@ -229,6 +229,9 @@ bool TabTreeModel::dropMimeData(const QMimeData *data, Qt::DropAction action, in
     if (!it || !parentItem) {
         return false;
     }
+    if (it->parent == parentItem) {
+        return false;
+    }
     if (!parentItem->tab) {
         tab->setParentTab(nullptr);
         if (row < 0) {