When you scroll with keyboard and mouse wheel on fixed column, the rest of the table wont follow scrolling. This issue occurs in IE and Safari.
Thank you @KSandweb I have replicated the issue as well.
I also have this problem.
The issue is not replicable in version 0.34.0/1.13.0 ( I have tested the demo above on IE11/Windows 10)
I am closing the issue but feel free to let me know if you have any problems with the code.