When you open the file it should ask you if you permit it to display in Full Screen Mode. You can say not, and click the box to remember that decision for the future. However, you can't change the actual setting in the file that attempts to open it in FS by default.
Yes i know i unintentionnally clic on yes and now it open the file on full sreen mode. So i can't change this setting now, can i ?
Try this: Go to Edit - Preferences - General and click on Reset All Warnings.
YES !! Thank you very much ! i tried this and it's solved !