While recording when clicking on an element then it is been recorded more than 1 time in the katalon version 10.3.1. Is any else facing this issue. If yes, then how to resolve it?
I guess you actually clicked an element twice with your trembling finger, though you are not aware of. When you click an element twice, the tool will record 2 actions.
You can edit the generated script.
fastest finger first 
Or, possibly you want a good mouse device.
By the way, just recently I bought a Logitech MX Master 3S Wireless Mouse, which is very nice!
and expensive too . i use a 1 dollar mouse
This one supports my trembling finger.
trembling costly mouse it is , Rich Tester I should say 
Are you a real user ?