What's the AC charger you use? I cannot meet this issue with HTC EVO 3D official AC charger. Maybe you use another brand's Micro USB charger but not HTC EVO 3D official AC charger.
I am using the official charger and cable. I do have the travel charger I bought for the EVO 4G last year. The Manager did say that there was no change to the chargers that the EVO 4G used and EVO 3D.