BQ24133: unexplained fault condition occurs when device turned on while its plugged into charger

We have found we get a fault when we turn on our device when it's plugged in to the charger.  We can clear the fault by unplugging the device from the charger and plugging it back in while it's on.  It seems to be related to rate of change of current rather than higher current due to inrush.  If we add 56 ohms in series with the charger, we don't get the fault, we can then drop the resistance (gradually, exactly how fast has yet to be determined)  to below one ohm and we don't get a fault. With 56 ohms in series we see peak current of 134mA.  Steady state current after the series resistance is dropped to less than one ohm is 3.5A.  Lowering the initial resistance, we see faults occur more often when the device is turned on while plugged in.  It doesn't seem like it could be an overcurrent fault because the peak current we measure when we see the fault is much less than the average current we draw from charger in normal operation.  Ideas?