diff --git a/addons/web_editor/static/lib/summernote/src/js/core/range.js b/addons/web_editor/static/lib/summernote/src/js/core/range.js
index 5c2dbe3b32c..20556b1d4fb 100644
--- a/addons/web_editor/static/lib/summernote/src/js/core/range.js
+++ b/addons/web_editor/static/lib/summernote/src/js/core/range.js
@@ -660,9 +660,15 @@ define([
             var selection = document.getSelection();
             if (!selection || selection.rangeCount === 0) {
               return null;
-            } else if (dom.isBody(selection.anchorNode)) {
-              // Firefox: returns entire body as range on initialization. We won't never need it.
-              return null;
+            } else {
+              try {
+                if (dom.isBody(selection.anchorNode)) {
+                  // Firefox: returns entire body as range on initialization. We won't never need it.
+                  return null;
+                }
+              } catch (e) {
+                return null;
+              }
             }
   
             var nativeRng = selection.getRangeAt(0);