I hope I can explain this without being too confusing...
In a battle, you can use the mouse to scroll around the map. You touch the left border, and it scrolls left; you touch the right border, and it scrolls right. But when you touch the border above a certain point, the camera will turn instead of scrolling.
Is there a way to reset that point? I would like it to be much higher, or even disable turning with the mouse altogether. I'd much rather just use Q and E for that, and use the mouse exclusively for scrolling.