From ce1e8c8beb082f11144a6c3e718738e41c8d696d Mon Sep 17 00:00:00 2001
From: Uwe Kindler <uwe_kindler@web.de>
Date: Wed, 15 Jan 2020 21:15:29 +0100
Subject: [PATCH] Fixed position calculation for tab dragging

---
 src/DockWidgetTab.cpp | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/src/DockWidgetTab.cpp b/src/DockWidgetTab.cpp
index aac597451..cc15aa5df 100644
--- a/src/DockWidgetTab.cpp
+++ b/src/DockWidgetTab.cpp
@@ -219,11 +219,10 @@ void DockWidgetTabPrivate::createLayout()
 void DockWidgetTabPrivate::moveTab(QMouseEvent* ev)
 {
     ev->accept();
-    int left, top, right, bottom;
-    _this->getContentsMargins(&left, &top, &right, &bottom);
-    QPoint moveToPos = ev->globalPos() - DragStartMousePosition;
-    moveToPos.setY(0);
-    _this->move(moveToPos);
+    QPoint Distance = ev->globalPos() - DragStartMousePosition;
+    Distance.setY(0);
+    auto TargetPos = Distance + TabDragStartPosition;
+    _this->move(TargetPos);
     _this->raise();
 }