Can somebody give me a link to an idiot's guide to Helicopter Autoflight?
In simple terms, think of 3-axis as FW without A/T, and 4-axis as with it. There's more to it than that, but in 3-axis a helicopter is potentially as vulnerable as the situations you describe (and Turkish Airlines, Thomas Cook etc)
By problem, I meant the autopilot causing an overtorque. Has that been sorted?
Depends what is being discussed. In turbulence at high power the torque will enter the MCP limit band transiently due to soft limiting, but it's not a true MGB torque limit in the normal sense. The original a/c would fully overtorque if allowed, with no limiting at all.