We've all heard of cases when a user pays too much gas fee, sometimes tens or even hundreds of ETH. Most of the times, at least in POW times, the miner would return the huge fee.

It seems that the trend did not die with the Merge.
https://cryptobriefing.com/suspected-ethereum-exploit-drains-wallet-of-121-eth-in-gas-fees/

Analysts seem to suggest an exploit of some sort.
The transaction in question is this one https://etherscan.io/tx/0x4a84d0872887f91546cd5400cf99763b654975efb3376ee55e4463bcfbca4e97 and they say there are more where this came from.

https://twitter.com/peckshield/status/1582756435955359744?t=Q-KyMcSnmAAFTnQl67WJLw&s=19

Hope it was some sort of user error, but pretty suspicios that this sort of error happened 25 times already.