Fix IE11 auto-scroll behaviour

[nathanpower]

This is another attempt at the fix previously tried with #1384.

I was able to see the auto-scrolling issues mentioned in the above PR by auto-scrolling with the various lists in the storybook, looks like it also needs a check for window.document, which this PR adds.

Repro steps for original bug:

• Run the storybook and go to fixed list with fixed sidebar
• (In IE11) with dev-tools open, drag an item such that auto-scroll is triggered

Bug:

• Error in console - Invariant failed: Window scrolling is currently not supported for fixed lists. Aborting drag

BTW - If you are testing Edge / IE11 locally on a Mac, I can highly recommend Parallels. I had previously been debugging using a Win10 VM on VirtualBox, and it was pretty painful/slow. Currently using the the demo of Parallels Desktop and it's super fast. One thing, in case it saves you some time, if you want to run storybook on the host and open it in your VM you will need to run the following from privileged command line on VM:

For VirtualBox:

netsh interface portproxy add v4tov4 listenport=9002 listenaddress=127.0.0.1 connectport=9002 connectaddress=10.0.2.2

For Parallels:

netsh interface portproxy add v4tov4 listenport=9002 listenaddress=127.0.0.1 connectport=9002 connectaddress=10.211.55.2

[alexreardon]

Is this now the working fix @nathanpower ?

[alexreardon]

This issue fell through the cracks for me. I remember we added a fix at one point and had to roll it back

[nathanpower]

Is this now the working fix @nathanpower ?

Well, it did seem to fix the described issue on IE11, and not cause the other issue that prompted the rollback. But given the test suite was not passing when I opened this, I should probably rebase this over the latest v12 branch, test again and check everything is still green, WDYT?

Is https://github.com/atlassian/react-beautiful-dnd/tree/virtual the branch to use?

[alexreardon]

I have included your fix in a commit that will make its way onto dev early next week

[nathanpower]

Just checked latest preview storybook on IE11, and the issue seems to be fixed now

Many thanks @alexreardon 👍

Will close this