Scrollbar is out of sync for larger number of items in IE11

[mconner]

Here's a stackblitz that illustrates the issue. This just shows 60000 items. If you drag the scrollbar to the end, you should see Row: 59999 Item 59999. And it works fine in Chrome.

IE11 on the other hand, gets to about 30700 items when you get to the end, and that seems to be dependent on the size of the items.. I can use the scrollwheel, click on the up and down arrows, or grab the scroll thum and "drag" down on it -- though it does not move , of course -- to advance. But it should already be at the end.

https://stackblitz.com/edit/angular-pdtfw7