Paper Space in DraftSight 2019

Hello, having used DraftSight 2017 where I did not encounter the following problem

When I lay out the layout in the paper space, I don't see the drawing, which appears in print. To make the plane appear, I have to put my sheet in the left corner and at the top of the screen to see the entire plan appear  as if the SCP of the plane space was not synchronized with the zoom. On the other hand, I can't select when opening the file, if I don't draw a polyline both in the template tab and in the presentation tab.

I'm using the software as a test, but I'm hesitant to buy it if it's so buggy.

Thank you for your help