DRV8838: DRV8838: High impedance mode (sleep) current leakage

Using this device (DRV8838) in sleep mode (nSleep to ground) we found that if VM is above 7V and we apply positive voltage to the outputs there is leakage current (order of mA) flowing into the output. If VM is below 7V we don't see any current flowing into the output pin. 

Datasheet says when it is in sleep mode the outputs should be in high impedance but If the output is in high impedance that shouldn't be happening even if VM is above 7V (always below 11V). Is is the normal behavior?

We are using 3.3V for VCC and input signals.