Moving Mouse Locks Screen - potential fix

cheerfully_gorgeous wrote:

There are a few outstanding questions about this and I had the same problem.

2022 moving mouse locks screen - Apple Community

2019 moving mouse locks screen - Apple Community

Turned out to be the Hot Corners shortcut that was doing it for me - for some reason at some point it had assigned the screensaver to the bottom left corner. Reset it to "-" and all good:

https://macpaw.com/how-to/lock-mac-screen1.

3. Set up a hot corner

Hot corners allow you to drag the mouse pointer to one of the four

corners of the screen to initiate an action – you can use one as a sleep

shortcut on your Mac. To set it up:

Launch System Preferences.

2. Choose the Desktop & Screen Saver pane. 

3. Click the Hot Corners button at the bottom right of the window. 

4. In the drop-down window, choose a corner.

5.  Click on the menu and choose either Start Screen Saver or Put Display to Sleep.

ref:

Trackpad/Logging Out - Apple Community