Hi weijie,
We will probably need some more information about where this is happening:
- Browser software and version.
- Browser operating system.
- Network speed.
I don't think it is a SAS Studio problem, but it could be due to your browser not displaying your screen quick enough! Could you try using a different browser please, and see if that makes any difference?
.........Phil
Philip R Holland
Recent book (see my blog site): "SAS Programming Experiences: A How-To Guide from a Power SAS User"