Thanks for the tip. It definitely helps as a work around. I also send an email to the co-founder of Evernote about this critical bug with a link to this forum. Hopefully he bring attention to upper management to take a look at this.
I also submitted a ticket with the link to this forum and was told they know about the bug. When I ask when it was filed, he said it doesn't have a date with bug report. This sounds a little suspicious. I even said I'm willing to bring in my laptop for them to investigate since I live in the Bay Area. But no reply for that. The scrolling works fine as long as you are not in the edit mode. Therefore, it's definitely not cause by our hardware or driver at all.