Fixed Columns - weird behavior on IE11

Shun

Hello,
I use DataTables with FixedColumns extension, it's very nice product mostly, but I found weird behavior on IE11.
(Chrome is OK)

That is:
Only Fixed Columns scroll vertically when I operate following steps.
1. Scroll whole table horizontally
2. Move mouse cursor over fixedColumns
3. And then scroll vertically with mousewheel

See attached file I took screen capture that this behavior appears on official example.
Can anyone help me?

Thanks.

Shun

does anyone have any ideas?
I want to synchronize DTFC_LeftBodyWrapper and dataTables_scrollBody perfectly...