A tweet by a popular moderator MegaMod confirmed the event as an error during deployment. The error was caused due to a deployment to improve the mining app Mainnet checklist. the error change the status of some Pioneers whose KYC applications were still “in progress” in the Pi KYC app to a “passed” status on the main app checklist by mistake, the error has since been fixed.

The statement reads.

In a deployment to improve the mining app mainnet checklist, there was a bug that caused some Pioneers whose KYC applications were still “in progress” in the Pi KYC app to have a “passed” status on the main app checklist by mistake.

We have fixed the bug and restored their true KYC status on the checklist. If any Pioneer has migrated to Mainnet by mistake during the few hours when this bug existed, we will soon revert the migration within their 14-day pending period.

which is designed as a failsafe for situations like this and others. The true KYC status of these Pioneers was unaffected by the bug within the Kyc.pi App. We will go through a more thorough analysis on accounts affected by the bug.

Attached is same announcement from the Pi chat.