diff --git a/packages/flow/openadapt_flow/compiler/compile.py b/packages/flow/openadapt_flow/compiler/compile.py
index 9788f05ea..ff9876006 100644
--- a/packages/flow/openadapt_flow/compiler/compile.py
+++ b/packages/flow/openadapt_flow/compiler/compile.py
@@ -1204,10 +1204,15 @@ def ident(o: dict) -> tuple:
         and isinstance(name, str)
         and name.strip()
     )
-    # An id or testid check also binds the element's role and name when it had
-    # them, so an id that moved to another element can't pass: the generated-id
-    # patterns are only a hint, and no list keeps up with every framework.
-    pair: dict[str, Any] = {"focus_role": role, "focus_name": name} if named else {}
+    # Every check needs a role and a non-empty name. An id or testid check
+    # binds them too, so an id that moved to another element can't pass: the
+    # generated-id patterns are only a hint, and no list keeps up with every
+    # framework. An element with no name (a bare tabindex div, a host whose
+    # closed shadow root holds the real focus) gets no check, and the step
+    # stays vacuous.
+    if not named:
+        return None
+    pair: dict[str, Any] = {"focus_role": role, "focus_name": name}
     if isinstance(testid, str) and testid.strip() and after.get("testid_count") == 1:
         return Postcondition(
             kind=PostconditionKind.FOCUS_ON,
diff --git a/packages/flow/openadapt_flow/ir.py b/packages/flow/openadapt_flow/ir.py
index acecc5108..5e9df14e6 100644
--- a/packages/flow/openadapt_flow/ir.py
+++ b/packages/flow/openadapt_flow/ir.py
@@ -640,15 +640,25 @@ def _serialize_compatible(self, handler: Any) -> dict[str, Any]:
 def focus_identity_is_specific(pc: "Postcondition") -> bool:
     """Whether a FOCUS_ON postcondition names one element, not a kind of element.
 
-    A ``testid`` or an ``id`` with a value, or a role with a non-empty
-    accessible name. A tag alone, or a role with no name, names no element:
-    such a postcondition asserts nothing and never passes.
+    A role with a non-empty accessible name, alone or with a ``testid`` or an
+    ``id``. A tag, a role with no name, or an id or testid without a role and
+    name names no element: such a postcondition asserts nothing and never
+    passes.
     """
 
     if pc.kind is not PostconditionKind.FOCUS_ON:
         return False
     if pc.focus_by in ("testid", "id"):
-        return bool(pc.focus_value and pc.focus_value.strip())
+        # An id or testid names one element only together with its role and
+        # name: an id alone can move to another element between renders.
+        return bool(
+            pc.focus_value
+            and pc.focus_value.strip()
+            and pc.focus_role
+            and pc.focus_role.strip()
+            and pc.focus_name
+            and pc.focus_name.strip()
+        )
     if pc.focus_by == "role_name":
         return bool(
             pc.focus_role
diff --git a/packages/flow/tests/test_focus_on_postcondition.py b/packages/flow/tests/test_focus_on_postcondition.py
index 1635b1ffb..c5e591eea 100644
--- a/packages/flow/tests/test_focus_on_postcondition.py
+++ b/packages/flow/tests/test_focus_on_postcondition.py
@@ -405,3 +405,48 @@ def test_an_unregistered_component_keeps_its_check_and_a_registered_one_does_not
         assert backend.focus_identity() is None
     finally:
         close()
+
+
+# -- follow-up: no check for an element without a name ------------------------------------
+
+
+def test_an_id_or_testid_without_a_role_and_name_is_not_a_check():
+    for after in (
+        _focus(tag="div", role=None, name=None, id="pane-3", id_count=1),
+        _focus(tag="div", role="generic", name=None, testid="pane", testid_count=1),
+    ):
+        assert _focus_postcondition(BEFORE, after) is None
+    bare = Postcondition(
+        kind=PostconditionKind.FOCUS_ON, focus_by="id", focus_value="pane-3"
+    )
+    assert not focus_identity_is_specific(bare)
+    assert is_vacuous(_key_step([bare])) is True
+
+
+def test_a_plain_host_with_a_closed_shadow_root_gets_no_check():
+    backend, close = _launch(
+        "<div id=host tabindex=-1></div><script>"
+        "window._root = document.getElementById('host').attachShadow({mode: 'closed'});"
+        "window._root.innerHTML = '<button>One</button><button>Two</button>';</script>"
+    )
+    try:
+        backend.page.evaluate("window._root.querySelectorAll('button')[1].focus()")
+        seen = backend.focus_identity()
+        # The page sees the host, which has an id but no role and name.
+        assert seen is not None and seen["id"] == "host"
+        assert _focus_postcondition(BEFORE, seen) is None
+    finally:
+        close()
+
+
+def test_an_unnamed_div_whose_id_shifts_gets_no_check():
+    backend, close = _launch(
+        "<div id=pane-3 tabindex=0>3</div><div id=pane-4 tabindex=0>4</div>"
+    )
+    try:
+        backend.page.locator("#pane-3").focus()
+        seen = backend.focus_identity()
+        assert seen is not None and seen["id"] == "pane-3"
+        assert _focus_postcondition(BEFORE, seen) is None
+    finally:
+        close()