Today I have got a strange issue on my Apple Magic Mouse. The symptom was like I tried to scroll a certain place in the screen then the scroll was stuck on the edge of the area. So I tried setting displays on the preference option. But it was no luck.
Then I started to suspect the mouse. So I changed my Magic Mouse to another Magic Mouse and it works! So the issue was my Magic Mouse has a software issue I guess. Then you need to reset your Magic Mouse connection with your Mac and try it again.