I used to always click far away from the store, open the store, then press S to stop somewhere near max range.
But now you can't stop anymore, so I just go back and forth until I have finished.
Why would you bother to change that ? It was better the way it was before. And you can still click to move while shopping.

I know it might sounds stupid, but it's just so frustrating.

It's because of the stupid type to search search filter they added to bloat the store up even more.

You also can't scroll the map using the arrow keys. I did that occasionally. Not being able to any more is annoying. While I'm here, why did they make the surrender menu EVEN BIGGER? I mean, sure, I already had to move it off screen when people used it in the middle of fights, but now it's enormous. And looks worse. For no reason. :/