Computer Mouse Appears on Screen

[OsO1]

I'm on my Samsung phone recently. It's been on screen. Recently, my Samsung s24 ultra phone started showing a computer mouse sign on the screen from time to time for seconds and then disappearing. Is this normal and what caused it? 

[jawadcoral]

Scan with knox for any viruses and try to check your Bluetooth devices and forget the unknown devices as its looks like security breach.

[OsO1]

I did that. Nothing was found.

[Samsung_specialist]

Please check if the following options are active:

Link to Windows

Multi control

Samsung flow app

These applications that allows connectivity between the phone and pc/tablets

[OsO1]

I've never connected the phone to the computer before, and every time it appears, I take a screenshot that doesn't appear.