diff --git a/.story_kit/work/1_upcoming/180_bug_web_ui_permissions_handling_unreliable.md b/.story_kit/work/1_upcoming/180_bug_web_ui_permissions_handling_unreliable.md
index 562c70b..90d6e05 100644
--- a/.story_kit/work/1_upcoming/180_bug_web_ui_permissions_handling_unreliable.md
+++ b/.story_kit/work/1_upcoming/180_bug_web_ui_permissions_handling_unreliable.md
@@ -25,7 +25,9 @@ Known issues:
 
 This is intermittent — retrying the same tool call often succeeds. Cause unknown.
 
-2. **Cascade failures on parallel calls**: When the above error hits one call in a parallel batch, Claude Code's all-or-nothing model kills all sibling calls too ([anthropics/claude-code#22264](https://github.com/anthropics/claude-code/issues/22264)). This is upstream and can't be fixed on our side, but compounds issue 1 significantly.
+## How to reproduce
+
+Use the web UI chat with claude-code provider. Perform normal operations (Edit files, run git commands). Intermittently, tool calls fail with the `invalid_union` error above. The same call succeeds on retry.
 
 ## How to reproduce