When using the Modular Storage in item grid mode and you scroll up or down with your mouse inside the storage window while it is highlighting any item, it will pull items into your inventory while also scrolling the window up and down. This is quite annoying and I assume it's not intentional behavior.

Yes I know. This is actually NEI doing that. Try using the scrollwheel in a normal chest. The same happens. I have to find a way to disable this.

I know. That's why I would like to disable it in my storage system.

In a normal chest it's not such an issue though, since there's never actually any scrolling.

AE2 uses Shift+scroll (or RClick) to allow +1/-1 item increments, or how about a thicker scroll bar and allow scrolling only when the mouse is over that area.

Yes, adding my own functionality is not a problem. The problem is having NEI not doing that scrollwheel thing anymore.