diff --git a/tests/studio/test_studio_text_descender_clipping.py b/tests/studio/test_studio_text_descender_clipping.py
index 7cad6cacfe..fc31b6c157 100644
--- a/tests/studio/test_studio_text_descender_clipping.py
+++ b/tests/studio/test_studio_text_descender_clipping.py
@@ -34,10 +34,15 @@ def test_model_selector_trigger_label_uses_leading_tight():
 
 def test_sidebar_account_block_uses_leading_tight():
     src = _read(APP_SIDEBAR)
-    # Match the account-block parent div regardless of its gap utility; this
-    # guard is about the leading-* class, not the spacing.
+    # Match the account-block parent div regardless of its gap utility or any
+    # sizing classes between flex and flex-col (min-w-0 flex-1 arrived with the
+    # long-name truncation work); this guard is about the leading-* class only.
+    # [^"\s] keeps the wildcard inside the className attribute, and the trailing
+    # displayTitle anchor pins the match to the account block itself so a
+    # lookalike wrapper (the update card) can never satisfy the guard.
     pattern = re.compile(
-        r'<div\s+className="flex\s+flex-col\s+gap-\S+\s+(\S+)\s+group-data-\[collapsible=icon\]:hidden">',
+        r'<div\s+className="flex\s+(?:[^"\s]+\s+)*?flex-col\s+gap-[^"\s]+\s+([^"\s]+)\s+'
+        r'group-data-\[collapsible=icon\]:hidden">(?:(?!</div>)[\s\S]){0,400}?\{displayTitle\}',
     )
     matches = pattern.findall(src)
     assert matches, "could not find sidebar account-block parent div"