Position value never updated

[mvaivre]

I'm trying to setup a pretty simple examples to mess around with react-track, but I'm unable to get any value update for posTopTop. I've tried many different simple combinations, it never worked.

For instance, I have two div with height: 100vh;, stacked one over the other:

render() {
    return ( 
    <TrackDocument formulas={[topTop]} >
      {(topTop) =>
        <div>
          <Track component={Page1} formulas={[topTop]}>
            {(Page1Tracked,posTopTop) =>
              <Page1Tracked handleScrollToPage2={this._handleScroll} posTopTop={posTopTop} />
            }
          </Track>
          <Track component={Page2} formulas={[topTop]}>
            {(Page2Tracked,posTopTop) =>
              <Page2Tracked posTopTop={posTopTop} />
            }
          </Track>
        </div>
        }
      </TrackDocument>
    )
  }

When I console.log the posTopTopprops in Page1 and Page2 render(), I get the correct initial value when mounting, but if I scroll, this value doesn't change (the component gets new props and the console.log is executed, but the value stays the same).
Any idea about what's going on? Thanks...

[gilbox]

hmm strange, seems like it should work