Thanks Marcel. I got how to reproduce the problem. The problem is caused by assistive technologies.
Assistive technologies perference ---> Mouse accessibility ---> General ----> Locate Pointer ---> tick the option of "show position of pointer when the control key is pressed"
The problem is gone if the option is de-selected.
Thanks for your help.
Thanks Marcel. I got how to reproduce the problem. The problem is caused by assistive technologies.
Assistive technologies perference ---> Mouse accessibility ---> General ----> Locate Pointer ---> tick the option of "show position of pointer when the control key is pressed"
The problem is gone if the option is de-selected.
Thanks for your help.