Yes
composer found the issue spot on
athoscouto on Hacker News
In the thread “Cursor 3”, replying to this comment
Helped: Using a specific bug report as a prompt for debugging.
Got in the way: GPT found a less likely vector; Claude was too slow.
… I used his report as prompt for composer 2, gpt-5.4-high and claude-4.6-opus-max-thinking. composer found the issue spot on. gpt found another possible vector a couple of minutes later, but a way less likely one and one that would eventually self heal (thus not actually reproducing what we observed on production). …