So this bug has been around for as long as I can remember, it might have been brought up but if not I should have done so as well
When previewing + loop automation if you cursor is not within the cycle and you press punch - it will also apply a piece of the automation parameters outside of the loop cycle, i believe where your cursor is. I will try to reproduce in a clean session and share a clip but if anyone else has experienced that or can reproduce will be great to track it officially.