Droppable is a scroll container doesn't allow to drop

[izorg]

Bug or feature request?

bug

Expected behavior

https://react-beautiful-dnd.netlify.com/?selectedKind=single%20vertical%20list&selectedStory=Droppable%20is%20a%20scroll%20container&full=0&addons=1&stories=1&panelRight=0&addonPanel=storybook%2Factions%2Factions-panel

Actual behavior

https://codesandbox.io/s/nr14lx21pl

Steps to reproduce

https://codesandbox.io/s/nr14lx21pl

Browser version

Chrome 65

Demo

https://codesandbox.io/s/nr14lx21pl

[alexreardon]

Good find. I will work on this asap.

In the mean time if you wrap your droppable in a scroll container it should be all good.

We have lots of tests for droppables that are scroll containers, but obviously this was missed. Sadly none of our examples exercise this directly