Actual loss is 0.21 BTC tho if I'm reading it right
Someone Used Rewards Bug on Stacker.News to Withdraw 20M Sats
"The bug led rewards to payout 86743171000 sats rather than the intended 8774 sats ... 867 bitcoin in rewards."
https://www.nobsbitcoin.com/someone-used-a-bug-on-stacker-news-to-withdraw-20m-sats/
Discussion
One user got 0.15 something. On a post about drivechains.