A government-controlled wallet that had been drained of $20 million on Thursday received most of its funds back Friday, adding another layer of mystery to transactions flagged by blockchain analysts as likely being connected to a high-profile theft.The pseudonymous blockchain sleuth ZachXBT had said in a tweet Thursday that the transfers resembled the playbook of a bad actor. Engaging with several decentralized finance protocols, the wallet had also tapped so-called instant exchanges after funds...