Peek is sometimes stuck after fling

[MBontekoning]

Hi,

Thanks for the great library.

I have a small issue, that the peek is sometimes after flinging it. When flung I start a new activity, and when finishing that one and peeking again, the peek is sometimes stuck halfway back to its original position. When I peek a second time after coming back, the peek is on the right place again.

Any idea what is going on?

See the images below that illustrate the issue (first image issue, second image expected result)