Object automatically move with cursor after a single click

[yo_0425]

I use to click on an object and drag to move it. While recently, after I single click on an object with out draging it, the object will automatically move with my cursor. Even I don't want the object to be moved. 

Another senario is that I clicked on an object and then I click on the canvas randomly, the object may automaticlly move to the point I clicked.

How to solve this problem? 

[Monika Gause · Accepted solution]

Could it be that you have MacOS and there is Magnet installed?

If not that, check the Accessibility settings in the system, maybe your mouse is sticky. Could be for dragging windows around.

[yo_0425 · Accepted solution]

I‘ve uninstalled Magnet and the problem seems to be solved. Thanks a lot!

It's weired that it had never happened before since I have installed both softwares for yrs..... Now I have to worry about which software could be a replacement to Magnet...