diff --git a/desktop/src/features/messages/lib/composerEditorGeometry.test.mjs b/desktop/src/features/messages/lib/composerEditorGeometry.test.mjs
index 613889f81d..20dd74509b 100644
--- a/desktop/src/features/messages/lib/composerEditorGeometry.test.mjs
+++ b/desktop/src/features/messages/lib/composerEditorGeometry.test.mjs
@@ -28,3 +28,66 @@ test("selection geometry returns null instead of throwing after view teardown",
 test("link geometry returns null instead of throwing after view teardown", () => {
   assert.equal(getEditorLinkRect(unmountedEditor(), 1, 2), null);
 });
+
+function mountedEditorWithCaretGeometry() {
+  const coords = new Map([
+    [1, { left: 10, right: 11, top: 20, bottom: 32 }],
+    [2, { left: 30, right: 31, top: 20, bottom: 32 }],
+  ]);
+  return {
+    view: {
+      domAtPos() {
+        return { node: {}, offset: 99 };
+      },
+      coordsAtPos(pos) {
+        return coords.get(pos);
+      },
+    },
+  };
+}
+
+function withThrowingRange(callback) {
+  const previousDocument = globalThis.document;
+  globalThis.document = {
+    createRange() {
+      throw new DOMException("stale DOM offset", "IndexSizeError");
+    },
+  };
+  try {
+    callback();
+  } finally {
+    globalThis.document = previousDocument;
+  }
+}
+
+test("selection geometry keeps the caret fallback when Range construction fails", () => {
+  withThrowingRange(() => {
+    assert.deepEqual(
+      getEditorSelectionRect(mountedEditorWithCaretGeometry(), 1, 2),
+      {
+        left: 10,
+        top: 20,
+        width: 21,
+        height: 12,
+        right: 31,
+        bottom: 32,
+      },
+    );
+  });
+});
+
+test("link geometry keeps the caret fallback when Range construction fails", () => {
+  withThrowingRange(() => {
+    assert.deepEqual(
+      getEditorLinkRect(mountedEditorWithCaretGeometry(), 1, 2),
+      {
+        left: 10,
+        top: 20,
+        width: 1,
+        height: 12,
+        right: 11,
+        bottom: 32,
+      },
+    );
+  });
+});
diff --git a/desktop/src/features/messages/lib/composerEditorGeometry.ts b/desktop/src/features/messages/lib/composerEditorGeometry.ts
index 0dd15461f5..ad15f86d4b 100644
--- a/desktop/src/features/messages/lib/composerEditorGeometry.ts
+++ b/desktop/src/features/messages/lib/composerEditorGeometry.ts
@@ -15,18 +15,22 @@ export function getEditorSelectionRect(
   to: number,
 ): EditorRect | null {
   try {
-    const range = document.createRange();
-    const start = editor.view.domAtPos(from);
-    const end = editor.view.domAtPos(to);
-    range.setStart(start.node, start.offset);
-    range.setEnd(end.node, end.offset);
+    try {
+      const range = document.createRange();
+      const start = editor.view.domAtPos(from);
+      const end = editor.view.domAtPos(to);
+      range.setStart(start.node, start.offset);
+      range.setEnd(end.node, end.offset);
 
-    const clientRects = Array.from(range.getClientRects()).filter(
-      (rect) => rect.width > 0 || rect.height > 0,
-    );
-    const rect = clientRects[0] ?? range.getBoundingClientRect();
-    range.detach();
-    if (rect.width > 0 || rect.height > 0) return rect;
+      const clientRects = Array.from(range.getClientRects()).filter(
+        (rect) => rect.width > 0 || rect.height > 0,
+      );
+      const rect = clientRects[0] ?? range.getBoundingClientRect();
+      range.detach();
+      if (rect.width > 0 || rect.height > 0) return rect;
+    } catch {
+      // A mounted view can still have stale Range offsets; use caret geometry.
+    }
 
     const startCoords = editor.view.coordsAtPos(from);
     const endCoords = editor.view.coordsAtPos(to);
@@ -55,23 +59,27 @@ export function getEditorLinkRect(
   to: number,
 ): EditorRect | null {
   try {
-    const range = document.createRange();
-    const start = editor.view.domAtPos(from);
-    const end = editor.view.domAtPos(to);
-    range.setStart(start.node, start.offset);
-    range.setEnd(end.node, end.offset);
+    try {
+      const range = document.createRange();
+      const start = editor.view.domAtPos(from);
+      const end = editor.view.domAtPos(to);
+      range.setStart(start.node, start.offset);
+      range.setEnd(end.node, end.offset);
 
-    const rect = range.getBoundingClientRect();
-    range.detach();
-    if (rect.width > 0 || rect.height > 0) {
-      return {
-        left: rect.left,
-        top: rect.top,
-        width: rect.width,
-        height: rect.height,
-        right: rect.right,
-        bottom: rect.bottom,
-      };
+      const rect = range.getBoundingClientRect();
+      range.detach();
+      if (rect.width > 0 || rect.height > 0) {
+        return {
+          left: rect.left,
+          top: rect.top,
+          width: rect.width,
+          height: rect.height,
+          right: rect.right,
+          bottom: rect.bottom,
+        };
+      }
+    } catch {
+      // A mounted view can still have stale Range offsets; use caret geometry.
     }
 
     const coords = editor.view.coordsAtPos(from);