diff --git a/xfa/fxfa/cxfa_ffcheckbutton.cpp b/xfa/fxfa/cxfa_ffcheckbutton.cpp
index 2245177..bfa1c51 100644
--- a/xfa/fxfa/cxfa_ffcheckbutton.cpp
+++ b/xfa/fxfa/cxfa_ffcheckbutton.cpp
@@ -250,12 +250,13 @@
   if (!GetNormalWidget() || !IsButtonDown())
     return false;
 
+  ObservedPtr<CXFA_FFCheckButton> pWatched(this);
   SetButtonDown(false);
   SendMessageToFWLWidget(pdfium::MakeUnique<CFWL_MessageMouse>(
       GetNormalWidget(), FWL_MouseCommand::LeftButtonUp, dwFlags,
       FWLToClient(point)));
 
-  return true;
+  return !!pWatched;
 }
 
 XFA_CHECKSTATE CXFA_FFCheckButton::FWLState2XFAState() {
diff --git a/xfa/fxfa/cxfa_ffcombobox.cpp b/xfa/fxfa/cxfa_ffcombobox.cpp
index 97de8ca..79b0ec6 100644
--- a/xfa/fxfa/cxfa_ffcombobox.cpp
+++ b/xfa/fxfa/cxfa_ffcombobox.cpp
@@ -107,11 +107,13 @@
 }
 
 bool CXFA_FFComboBox::OnKillFocus(CXFA_FFWidget* pNewWidget) {
+  ObservedPtr<CXFA_FFWidget> pWatched(this);
   ObservedPtr<CXFA_FFWidget> pNewWatched(pNewWidget);
   if (!ProcessCommittedData())
     UpdateFWLData();
 
-  return pNewWatched && CXFA_FFField::OnKillFocus(pNewWatched.Get());
+  return pWatched && pNewWatched &&
+         CXFA_FFField::OnKillFocus(pNewWatched.Get());
 }
 
 void CXFA_FFComboBox::OpenDropDownList() {
diff --git a/xfa/fxfa/cxfa_fffield.cpp b/xfa/fxfa/cxfa_fffield.cpp
index e11e968..692d13e 100644
--- a/xfa/fxfa/cxfa_fffield.cpp
+++ b/xfa/fxfa/cxfa_fffield.cpp
@@ -378,18 +378,22 @@
   if (!GetNormalWidget())
     return false;
 
+  ObservedPtr<CXFA_FFField> pWatched(this);
   SendMessageToFWLWidget(pdfium::MakeUnique<CFWL_MessageMouse>(
       GetNormalWidget(), FWL_MouseCommand::Enter));
-  return true;
+
+  return !!pWatched;
 }
 
 bool CXFA_FFField::OnMouseExit() {
   if (!GetNormalWidget())
     return false;
 
+  ObservedPtr<CXFA_FFField> pWatched(this);
   SendMessageToFWLWidget(pdfium::MakeUnique<CFWL_MessageMouse>(
       GetNormalWidget(), FWL_MouseCommand::Leave));
-  return true;
+
+  return !!pWatched;
 }
 
 CFX_PointF CXFA_FFField::FWLToClient(const CFX_PointF& point) {
@@ -412,11 +416,13 @@
 }
 
 bool CXFA_FFField::OnLButtonDown(uint32_t dwFlags, const CFX_PointF& point) {
+  ObservedPtr<CXFA_FFField> pWatched(this);
   SetButtonDown(true);
   SendMessageToFWLWidget(pdfium::MakeUnique<CFWL_MessageMouse>(
       GetNormalWidget(), FWL_MouseCommand::LeftButtonDown, dwFlags,
       FWLToClient(point)));
-  return true;
+
+  return !!pWatched;
 }
 
 bool CXFA_FFField::OnLButtonUp(uint32_t dwFlags, const CFX_PointF& point) {
@@ -425,30 +431,36 @@
   if (!IsButtonDown())
     return false;
 
+  ObservedPtr<CXFA_FFField> pWatched(this);
   SetButtonDown(false);
   SendMessageToFWLWidget(pdfium::MakeUnique<CFWL_MessageMouse>(
       GetNormalWidget(), FWL_MouseCommand::LeftButtonUp, dwFlags,
       FWLToClient(point)));
-  return true;
+
+  return !!pWatched;
 }
 
 bool CXFA_FFField::OnLButtonDblClk(uint32_t dwFlags, const CFX_PointF& point) {
   if (!GetNormalWidget())
     return false;
 
+  ObservedPtr<CXFA_FFField> pWatched(this);
   SendMessageToFWLWidget(pdfium::MakeUnique<CFWL_MessageMouse>(
       GetNormalWidget(), FWL_MouseCommand::LeftButtonDblClk, dwFlags,
       FWLToClient(point)));
-  return true;
+
+  return !!pWatched;
 }
 
 bool CXFA_FFField::OnMouseMove(uint32_t dwFlags, const CFX_PointF& point) {
   if (!GetNormalWidget())
     return false;
 
+  ObservedPtr<CXFA_FFField> pWatched(this);
   SendMessageToFWLWidget(pdfium::MakeUnique<CFWL_MessageMouse>(
       GetNormalWidget(), FWL_MouseCommand::Move, dwFlags, FWLToClient(point)));
-  return true;
+
+  return !!pWatched;
 }
 
 bool CXFA_FFField::OnMouseWheel(uint32_t dwFlags,
@@ -457,17 +469,21 @@
   if (!GetNormalWidget())
     return false;
 
+  ObservedPtr<CXFA_FFField> pWatched(this);
   SendMessageToFWLWidget(pdfium::MakeUnique<CFWL_MessageMouseWheel>(
       GetNormalWidget(), dwFlags, FWLToClient(point), CFX_PointF(zDelta, 0)));
-  return true;
+
+  return !!pWatched;
 }
 
 bool CXFA_FFField::OnRButtonDown(uint32_t dwFlags, const CFX_PointF& point) {
+  ObservedPtr<CXFA_FFField> pWatched(this);
   SetButtonDown(true);
   SendMessageToFWLWidget(pdfium::MakeUnique<CFWL_MessageMouse>(
       GetNormalWidget(), FWL_MouseCommand::RightButtonDown, dwFlags,
       FWLToClient(point)));
-  return true;
+
+  return !!pWatched;
 }
 
 bool CXFA_FFField::OnRButtonUp(uint32_t dwFlags, const CFX_PointF& point) {
@@ -476,21 +492,25 @@
   if (!IsButtonDown())
     return false;
 
+  ObservedPtr<CXFA_FFField> pWatched(this);
   SetButtonDown(false);
   SendMessageToFWLWidget(pdfium::MakeUnique<CFWL_MessageMouse>(
       GetNormalWidget(), FWL_MouseCommand::RightButtonUp, dwFlags,
       FWLToClient(point)));
-  return true;
+
+  return !!pWatched;
 }
 
 bool CXFA_FFField::OnRButtonDblClk(uint32_t dwFlags, const CFX_PointF& point) {
   if (!GetNormalWidget())
     return false;
 
+  ObservedPtr<CXFA_FFField> pWatched(this);
   SendMessageToFWLWidget(pdfium::MakeUnique<CFWL_MessageMouse>(
       GetNormalWidget(), FWL_MouseCommand::RightButtonDblClk, dwFlags,
       FWLToClient(point)));
-  return true;
+
+  return !!pWatched;
 }
 
 bool CXFA_FFField::OnSetFocus(CXFA_FFWidget* pOldWidget) {
@@ -500,14 +520,17 @@
   if (!GetNormalWidget())
     return false;
 
+  ObservedPtr<CXFA_FFField> pWatched(this);
   SendMessageToFWLWidget(
       pdfium::MakeUnique<CFWL_MessageSetFocus>(nullptr, GetNormalWidget()));
   GetLayoutItem()->SetStatusBits(XFA_WidgetStatus_Focused);
   InvalidateRect();
-  return true;
+
+  return !!pWatched;
 }
 
 bool CXFA_FFField::OnKillFocus(CXFA_FFWidget* pNewWidget) {
+  ObservedPtr<CXFA_FFField> pWatched(this);
   ObservedPtr<CXFA_FFWidget> pNewWatched(pNewWidget);
   if (GetNormalWidget()) {
     SendMessageToFWLWidget(
@@ -515,25 +538,30 @@
     GetLayoutItem()->ClearStatusBits(XFA_WidgetStatus_Focused);
     InvalidateRect();
   }
-  return pNewWatched && CXFA_FFWidget::OnKillFocus(pNewWatched.Get());
+  return pWatched && pNewWatched &&
+         CXFA_FFWidget::OnKillFocus(pNewWatched.Get());
 }
 
 bool CXFA_FFField::OnKeyDown(uint32_t dwKeyCode, uint32_t dwFlags) {
   if (!GetNormalWidget() || !GetDoc()->GetXFADoc()->IsInteractive())
     return false;
 
+  ObservedPtr<CXFA_FFField> pWatched(this);
   SendMessageToFWLWidget(pdfium::MakeUnique<CFWL_MessageKey>(
       GetNormalWidget(), FWL_KeyCommand::KeyDown, dwFlags, dwKeyCode));
-  return true;
+
+  return !!pWatched;
 }
 
 bool CXFA_FFField::OnKeyUp(uint32_t dwKeyCode, uint32_t dwFlags) {
   if (!GetNormalWidget() || !GetDoc()->GetXFADoc()->IsInteractive())
     return false;
 
+  ObservedPtr<CXFA_FFField> pWatched(this);
   SendMessageToFWLWidget(pdfium::MakeUnique<CFWL_MessageKey>(
       GetNormalWidget(), FWL_KeyCommand::KeyUp, dwFlags, dwKeyCode));
-  return true;
+
+  return !!pWatched;
 }
 
 bool CXFA_FFField::OnChar(uint32_t dwChar, uint32_t dwFlags) {
@@ -546,9 +574,11 @@
   if (!m_pNode->IsOpenAccess())
     return false;
 
+  ObservedPtr<CXFA_FFField> pWatched(this);
   SendMessageToFWLWidget(pdfium::MakeUnique<CFWL_MessageKey>(
       GetNormalWidget(), FWL_KeyCommand::Char, dwFlags, dwChar));
-  return true;
+
+  return !!pWatched;
 }
 
 FWL_WidgetHit CXFA_FFField::HitTest(const CFX_PointF& point) {
diff --git a/xfa/fxfa/cxfa_ffimageedit.cpp b/xfa/fxfa/cxfa_ffimageedit.cpp
index ce9a990..4ff46a9 100644
--- a/xfa/fxfa/cxfa_ffimageedit.cpp
+++ b/xfa/fxfa/cxfa_ffimageedit.cpp
@@ -102,11 +102,13 @@
 
 bool CXFA_FFImageEdit::OnLButtonDown(uint32_t dwFlags,
                                      const CFX_PointF& point) {
+  ObservedPtr<CXFA_FFImageEdit> pWatched(this);
   SetButtonDown(true);
   SendMessageToFWLWidget(pdfium::MakeUnique<CFWL_MessageMouse>(
       GetNormalWidget(), FWL_MouseCommand::LeftButtonDown, dwFlags,
       FWLToClient(point)));
-  return true;
+
+  return !!pWatched;
 }
 
 void CXFA_FFImageEdit::SetFWLRect() {
diff --git a/xfa/fxfa/cxfa_fflistbox.cpp b/xfa/fxfa/cxfa_fflistbox.cpp
index ede1bc5..1f53209 100644
--- a/xfa/fxfa/cxfa_fflistbox.cpp
+++ b/xfa/fxfa/cxfa_fflistbox.cpp
@@ -71,11 +71,13 @@
 }
 
 bool CXFA_FFListBox::OnKillFocus(CXFA_FFWidget* pNewFocus) {
-  ObservedPtr<CXFA_FFWidget> pWatched(pNewFocus);
+  ObservedPtr<CXFA_FFListBox> pWatched(this);
+  ObservedPtr<CXFA_FFWidget> pNewWatched(pNewFocus);
   if (!ProcessCommittedData())
     UpdateFWLData();
 
-  return pWatched && CXFA_FFField::OnKillFocus(pWatched.Get());
+  return pWatched && pNewWatched &&
+         CXFA_FFField::OnKillFocus(pNewWatched.Get());
 }
 
 bool CXFA_FFListBox::CommitData() {
diff --git a/xfa/fxfa/cxfa_fftextedit.cpp b/xfa/fxfa/cxfa_fftextedit.cpp
index d75bef8..c5c52b9 100644
--- a/xfa/fxfa/cxfa_fftextedit.cpp
+++ b/xfa/fxfa/cxfa_fftextedit.cpp
@@ -121,28 +121,38 @@
 }
 
 bool CXFA_FFTextEdit::OnLButtonDown(uint32_t dwFlags, const CFX_PointF& point) {
+  ObservedPtr<CXFA_FFTextEdit> pWatched(this);
   if (!IsFocused()) {
     GetLayoutItem()->SetStatusBits(XFA_WidgetStatus_Focused);
     UpdateFWLData();
+    if (!pWatched)
+      return false;
+
     InvalidateRect();
   }
   SetButtonDown(true);
   SendMessageToFWLWidget(pdfium::MakeUnique<CFWL_MessageMouse>(
       GetNormalWidget(), FWL_MouseCommand::LeftButtonDown, dwFlags,
       FWLToClient(point)));
-  return true;
+
+  return !!pWatched;
 }
 
 bool CXFA_FFTextEdit::OnRButtonDown(uint32_t dwFlags, const CFX_PointF& point) {
+  ObservedPtr<CXFA_FFTextEdit> pWatched(this);
   if (!IsFocused()) {
     GetLayoutItem()->SetStatusBits(XFA_WidgetStatus_Focused);
     UpdateFWLData();
+    if (!pWatched)
+      return false;
+
     InvalidateRect();
   }
   SetButtonDown(true);
   SendMessageToFWLWidget(pdfium::MakeUnique<CFWL_MessageMouse>(
       nullptr, FWL_MouseCommand::RightButtonDown, dwFlags, FWLToClient(point)));
-  return true;
+
+  return !!pWatched;
 }
 
 bool CXFA_FFTextEdit::OnRButtonUp(uint32_t dwFlags, const CFX_PointF& point) {
@@ -154,34 +164,47 @@
 }
 
 bool CXFA_FFTextEdit::OnSetFocus(CXFA_FFWidget* pOldWidget) {
-  ObservedPtr<CXFA_FFWidget> pWatched(pOldWidget);
+  ObservedPtr<CXFA_FFTextEdit> pWatched(this);
+  ObservedPtr<CXFA_FFWidget> pOldWatched(pOldWidget);
   GetLayoutItem()->ClearStatusBits(XFA_WidgetStatus_TextEditValueChanged);
   if (!IsFocused()) {
     GetLayoutItem()->SetStatusBits(XFA_WidgetStatus_Focused);
     UpdateFWLData();
+    if (!pWatched)
+      return false;
+
     InvalidateRect();
   }
-  if (!CXFA_FFWidget::OnSetFocus(pWatched.Get()))
+  if (!CXFA_FFWidget::OnSetFocus(pOldWatched.Get()))
     return false;
 
   SendMessageToFWLWidget(
       pdfium::MakeUnique<CFWL_MessageSetFocus>(nullptr, GetNormalWidget()));
 
-  return true;
+  return !!pWatched;
 }
 
 bool CXFA_FFTextEdit::OnKillFocus(CXFA_FFWidget* pNewWidget) {
-  ObservedPtr<CXFA_FFWidget> pWatched(pNewWidget);
+  ObservedPtr<CXFA_FFWidget> pWatched(this);
+  ObservedPtr<CXFA_FFWidget> pNewWatched(pNewWidget);
   SendMessageToFWLWidget(
       pdfium::MakeUnique<CFWL_MessageKillFocus>(nullptr, GetNormalWidget()));
 
+  if (!pWatched)
+    return false;
+
   GetLayoutItem()->ClearStatusBits(XFA_WidgetStatus_Focused);
   SetEditScrollOffset();
   ProcessCommittedData();
   UpdateFWLData();
   InvalidateRect();
+  if (!pWatched)
+    return false;
 
-  if (!CXFA_FFWidget::OnKillFocus(pWatched.Get()))
+  if (!CXFA_FFWidget::OnKillFocus(pNewWatched.Get()))
+    return false;
+
+  if (!pWatched)
     return false;
 
   GetLayoutItem()->ClearStatusBits(XFA_WidgetStatus_TextEditValueChanged);
diff --git a/xfa/fxfa/cxfa_ffwidget.cpp b/xfa/fxfa/cxfa_ffwidget.cpp
index 61cd5cc..b743a6e 100644
--- a/xfa/fxfa/cxfa_ffwidget.cpp
+++ b/xfa/fxfa/cxfa_ffwidget.cpp
@@ -435,10 +435,8 @@
   eParam.m_eType = XFA_EVENT_Enter;
   eParam.m_pTarget = m_pNode.Get();
   m_pNode->ProcessEvent(GetDocView(), XFA_AttributeValue::Enter, &eParam);
-  if (!pWatched)
-    return false;
 
-  return true;
+  return !!pWatched;
 }
 
 bool CXFA_FFWidget::OnKillFocus(CXFA_FFWidget* pNewWidget) {