You mean when panning?
What menu comes up - the snap modes menu if you have a command open and a swappable field selected or the context menu eg breakine etc if you have a line selected or the last used commands if you have nothing selected
This sounds like it is a mouse issue ie you may have your mouse configured so that it clashes in some way or you have a fault on your mouse or your click speed is off
You can pan also by clicking the wheel of your mouse
I have not noticed this at all personally - has anyone else seen this?
I will try this deliberately to see what happens also
Alan