I bought a mibox s recently and had the wakeup issue which was frustrating until I turned on hdmi-cec on tv and enabled all options under CEC control in settings and since then it never missed a wakeup from remote it even power on tv too maybe this would work for someone else ? or could be just random luck I thought it’s worth sharing
Its really hit or miss, I have all the same settings enabled along with do-not-sleep in Dev settings. Sometimes I'll go 5 days waking no issues, sometimes it'll happen twice in one day :/