Has anyone notice this? Today one miner has been mined almost all blocks on testnet. And he has not including any segwit transactions in the blocks! My test transactions have not been confirmed since 6 hours ago!
https://live.blockcypher.com/btc-testnet/tx/b80f9a8aa0e3a636c517072597b945cee4d878d9f645d19a8666dc6f6ca91d31/
I am a bit worry of this type of attack could deal a great damage to Bitcoin Mainnet!