# "Poof! Disappeared! Like a magic trick" - a typo that deleted every user's progress

> One misread variable nuked ALL course data. The tester found out first.

This is the Markdown copy of https://usesuperflow.ai/bug-book/vanishing-progress, published for AI agents and scripts. The HTML page is canonical.

## Key facts

| Field | Value |
| --- | --- |
| Page type | Bug Book entry |
| URL | https://usesuperflow.ai/bug-book/vanishing-progress |
| Issue type | Interactions |
| Severity | Critical |
| Status | Resolved |
| Site | Client platform (staging) |
| Platform | Custom app |
| Captured on | Chrome 138, Windows, Desktop |
| Date | 2025-07-01 |

## Why it matters

A one-variable typo turned "leave group" into "delete everything." In production, that's a company-ending support week. In staging, with a patient beta tester, it's a war story with a happy ending.

## Outcome

Resolved before launch. The tester deserves that loyalty card.

## The thread

- **Beta tester:** I found a new issue! At this point, I should start a loyalty card. hehe. My dashboard is now having issues (these issues were not here like 5 minutes ago). I have lost all progress on all of my courses... they are all gone. poof! disappeared! like a magic trick...
- **Developer:** I've been trying to get to the bottom of this one, but it's a real head-scratcher... I can't find any record of you having submitted answers for this group. Are you positive you completed lessons here?
- **Beta tester:** This is not the course I tried to leave. And it happened to ALL of the courses on my dashboard.
- **Developer:** I found it... The leave-group button is supposed to delete your data from JUST that group - but due to a typo in the variable, it couldn't read the group id, thought it was empty, and instead deleted the data for ALL of your groups. Whoops! Looks like you were the lucky one to try it first outside my test account... REALLY glad you uncovered this one before we launch.
- **Beta tester:** Not a problem at all! Glad you were able to find the problem!!

## About Superflow

Superflow is a website and creative-asset review tool. Its agents watch every page of a site, report what changed, and route findings to the people who approve them. Teams leave contextual feedback on live sites, staging environments, PDFs, images, videos, and Lottie animations, and comments sync two-way with Asana, ClickUp, Monday, Slack, Webflow, and Google Tag Manager.

Machine-readable entry points:

- Site index: https://usesuperflow.ai/llms.txt
- Full site content in one fetch: https://usesuperflow.ai/llms-full.txt
- Free tools, with a Markdown copy of each: https://usesuperflow.ai/tools.md
- MCP server (Streamable HTTP, no account and no API key): https://usesuperflow.ai/api/mcp
- Agent card: https://usesuperflow.ai/.well-known/agent-card.json