onChange and onBlur both trigger the onChange event

I have a handler for the onChange event and a handler for the onBlur event. Whe the input loses focus it triggers both handlers instead of triggering only the onBlur handler:

       <InputNumber
          disabled={this.state.disabled)}
          onBlur={(e) => e.preventDefault()}
          onChange={this.handleDurationChange}
          onClick={e => e.stopPropagation()}
          precision={2}
          min={0}
          step={'0.1'}
          value={this.state.duration ? (this.state.duration / 3600).toFixed(2) : null}
        />

I've tried e.stopPropagation in the onBlur handler but nothing.
Any idea why this is happening?
Thanks in advance!

Versions:

• react@16.12.0
• rc-input-number@4.5.6

Start by reproducing the provided InputNumber case with the listed react and rc-input-number versions, focusing on the transition from editing to losing focus. Trace the onBlur and onChange event handling and verify that a blur invokes only onBlur, while preserving normal change behavior.