I'm having a little problem in Illustrator CS6 that makes me very confused.I'm trying to extend my file to the "bleed" grid,but the extended background is transparent,which then results in a blank space bleed.How could i fix it,it only happens with this file?
If you are using
Simulate colored paper then that appears correct. The simulation won't extend into the bleed area, and it shouldn't since it's intent is to simulate the stock. Because that color is not to be printed, it shouldn't bleed.
If that is merely a rectangle filled with color. Increase the size of the rectangle to hit your bleed guides.
Looks like you have two boxes to extend. The first one is the pattern, which you've extended, the other should be the solid colour box that is behind your pattern. You should be able to select both boxes at once and extend them. If not, double check that all objects are unlocked, then try to select the colored background box and extend it.
Object > Unlock all