NEED HELP - Export to PNG only on page area

Can someone help me with my Corel? I started use corel on X7, and usually when I want to export my work to PNG it is automatically only export object in the page only, although there is another object outside page. Suddenly, this is not working anymore when I create a new documents. But, when I opened my save file, it's work again. Sorry for my bad english, if you still can't understand please watch this video, I explain my problem on the video. I hope someone can help me with this problem.

I try this on X8 too, but still same, when I create new Document, export file still export all the object outside the page. But when I open my save file, export only object in the page area is works.

PS: I never use Export setting like "Selected only", my recent save file export is just automatically only export object on the page area only