Lost $20K USDC today to one missing character on Solana.
I was repaying a loan on Solana and was using the protocol in backpack, I copied my address from backpack, pasted it into Binance and After sending, I realized the last "J" in the address was gone.
Still a valid Solana address, so it went through. Almost certainly nobody holds the key.
First time losing money in a very stupid way.
I blame Binance, but that's probably because I'm a little salty right now.