diff --git a/libSplitView/dockpanel.cpp b/libSplitView/dockpanel.cpp
index 7856014..087f860 100644
--- a/libSplitView/dockpanel.cpp
+++ b/libSplitView/dockpanel.cpp
@@ -69,7 +69,9 @@ void DragHeader::mouseReleaseEvent(QMouseEvent *event)
 void DragHeader::mouseMoveEvent(QMouseEvent *event)
 {
     QFrame::mouseMoveEvent(event);
-    if(std::get<0>(this->press_flag)){
+    auto sub = event->pos() - std::get<1>(press_flag);
+
+    if(std::get<0>(this->press_flag) && sub.manhattanLength() > QApplication::startDragDistance()){
         emit this->adjustRequest(event->pos());
     }
 }
diff --git a/libSplitView/splitwindow.cpp b/libSplitView/splitwindow.cpp
index b984301..5e1549c 100644
--- a/libSplitView/splitwindow.cpp
+++ b/libSplitView/splitwindow.cpp
@@ -119,6 +119,7 @@ void SplitWindow::present_remove(split_frame::ViewRes *inst)
     }
     else if(inst == view_root){
         setRoot(nullptr);
+        inst->setParentRes(nullptr);
     }
 }
 void SplitWindow::doRetrieve(split_frame::ViewBase *inst)
@@ -150,10 +151,10 @@ void SplitWindow::doClose(split_frame::ViewBase *inst)
 
 void SplitWindow::siblingAttach(ViewBase *view, ViewRes *pos, SplitType ori)
 {
+    auto remains_frm = pos->parentRes();
     doRetrieve(view);
 
     auto split_slot = new split_panel::SplitPanel(this, ori);
-    auto remains_frm = pos->parentRes();
     remains_frm->replaceView(split_slot, pos);
 
     switch (ori) {