diff --git a/testing/resources/javascript/xfa_specific/bug_993771.in b/testing/resources/javascript/xfa_specific/bug_993771.in
new file mode 100644
index 0000000..e94fa58
--- /dev/null
+++ b/testing/resources/javascript/xfa_specific/bug_993771.in
@@ -0,0 +1,78 @@
+{{header}}
+{{object 1 0}} <<
+  /Type /Catalog
+  /Pages 2 0 R
+  /NeedsRendering true
+  /AcroForm <<
+    /XFA 5 0 R
+  >>
+>>
+endobj
+{{object 2 0}} <<
+  /Type /Pages
+  /Count 1
+  /Kids [4 0 R]
+>>
+endobj
+{{object 4 0}} <<
+  /Type /Page
+  /Parent 2 0 R
+  /MediaBox [ 0 0 795 842 ]
+>>
+endobj
+{{object 5 0}} <<
+  {{streamlen}}
+>>
+stream
+<xdp:xdp xmlns:xdp="http://ns.adobe.com/xdp/">
+<template>
+  <subform id="subformId_0" mergeMode="consumeData" name="subform_0">
+    <event activity="docReady">
+      <script contentType="application/x-javascript">
+        xfa.resolveNode("xfa.form.subform_0.subform_1").layout = "tb";
+      </script>
+    </event>
+    <subform id="subformId_1" layout="table" mergeMode="consumeData" name="subform_1" >
+      <field id="fieldId_2" name="field_2" >
+        <event activity="docReady" >
+          <script contentType="application/x-javascript">
+            xfa.resolveNode("xfa.form.subform_0.subform_2").execValidate();
+          </script>
+        </event>
+      </field>
+      <field id="fieldId_3" name="field_3" >
+          <validate scriptTest="disabled" >
+            <script contentType="application/x-javascript">
+              xfa.resolveNode("xfa.form.subform_0.subform_1").keep.next = "pageArea";
+            </script>
+          </validate>
+      </field>
+    </subform>
+    <subformSet>
+      <breakBefore id="breakBeforeId_3" startNew="0" ></breakBefore>
+      <subform allowMacro="1" id="subformId_2" mergeMode="consumeData" name="subform_2" >
+        <field id="fieldId_5" name="field_5" >
+          <validate scriptTest="disabled" >
+            <script contentType="application/x-javascript">
+              xfa.host.setFocus("xfa.form.subform_0.subform_1.field_3");
+            </script>
+          </validate>
+        </field>
+        <field id="fieldId_6" name="field_6" >
+          <validate scriptTest="disabled" >
+            <script contentType="application/x-javascript">
+              xfa.resolveNode("xfa.form.subform_0.subform_1").layout = "position";
+            </script>
+          </validate>
+        </field>
+      </subform>
+    </subformSet>
+  </subform>
+</template>
+</xdp:xdp>
+endstream
+endobj
+{{xref}}
+{{trailer}}
+{{startxref}}
+%%EOF
diff --git a/testing/resources/javascript/xfa_specific/bug_993771_expected.txt b/testing/resources/javascript/xfa_specific/bug_993771_expected.txt
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/testing/resources/javascript/xfa_specific/bug_993771_expected.txt
diff --git a/xfa/fxfa/cxfa_ffdocview.cpp b/xfa/fxfa/cxfa_ffdocview.cpp
index 9016c55..97a2883 100644
--- a/xfa/fxfa/cxfa_ffdocview.cpp
+++ b/xfa/fxfa/cxfa_ffdocview.cpp
@@ -300,10 +300,10 @@
   if (pNewFocus) {
     CXFA_Node* node = pNewFocus->GetNode();
     m_pFocusNode = node->IsWidgetReady() ? node : nullptr;
-    m_pFocusWidget = pNewFocus;
+    m_pFocusWidget.Reset(pNewFocus);
   } else {
     m_pFocusNode = nullptr;
-    m_pFocusWidget = nullptr;
+    m_pFocusWidget.Reset();
   }
 
   return true;
@@ -329,7 +329,7 @@
     return;
 
   m_pFocusNode = nullptr;
-  m_pFocusWidget = nullptr;
+  m_pFocusWidget.Reset();
 }
 
 static XFA_EventError XFA_ProcessEvent(CXFA_FFDocView* pDocView,
diff --git a/xfa/fxfa/cxfa_ffdocview.h b/xfa/fxfa/cxfa_ffdocview.h
index e9a094f..092616e 100644
--- a/xfa/fxfa/cxfa_ffdocview.h
+++ b/xfa/fxfa/cxfa_ffdocview.h
@@ -11,14 +11,15 @@
 #include <memory>
 #include <vector>
 
+#include "core/fxcrt/observed_ptr.h"
 #include "core/fxcrt/unowned_ptr.h"
 #include "xfa/fxfa/cxfa_eventparam.h"
 #include "xfa/fxfa/cxfa_ffdoc.h"
+#include "xfa/fxfa/cxfa_ffwidget.h"
 #include "xfa/fxfa/fxfa.h"
 
 class CXFA_BindItems;
 class CXFA_FFDoc;
-class CXFA_FFWidget;
 class CXFA_FFWidgetHandler;
 class CXFA_Node;
 class CXFA_ReadyNodeIterator;
@@ -120,7 +121,7 @@
   std::unique_ptr<CXFA_FFWidgetHandler> m_pWidgetHandler;
   UnownedPtr<CXFA_LayoutProcessor> m_pXFADocLayout;
   UnownedPtr<CXFA_Node> m_pFocusNode;
-  UnownedPtr<CXFA_FFWidget> m_pFocusWidget;
+  ObservedPtr<CXFA_FFWidget> m_pFocusWidget;
   std::deque<CXFA_Node*> m_ValidateNodes;
   std::vector<CXFA_Node*> m_CalculateNodes;
   std::deque<CXFA_BindItems*> m_BindItems;