ArcGIS Basic (ArcView) - How to refresh screen in ArcMap while editing?

Hi,

I just upgraded to ArcGIS Basic (ArcView) 10.2 and I noticed that screen refresh is poor!

I mean if you look at the files attached, in an Edit Session, if you move a label with a leading line, held in an Annotation Feature Class, the new leader line doesn't refresh properly.

The file Leader 'Leader Line before editing- ArcMap.png' is before moving the label.
The file Leader 'Leader Line after editing- ArcMap.png' is after moving the label, with no refresh.

I have to do press manually F5 in order to refresh the screen and see the result of my action! In file 'Leader Line refreshed- ArcMap.png'

I don't know if it is a poor behaviour of ArcGIS 10.2 and/or some settings to change.

I would be grateful if somebody could help.

Regards

Attached Thumbnails