Pasting text from the clipboard on click

Hello! I’ve started using Manjaro not a long time ago. Maybe it’s not a bug, but sometimes when I click I paste current text on clipboard. Is it a shortcut of some kind? And if it is, how can I turn it off?

:+1: Welcome to Manjaro! :+1:

Is it possible that this only happens when you click both left and right buttons at the same time or the middle button if you have one?

If yes: That’s not a bug! That’s a feature!