Everything is fine in Qt Designer, you start the shell through pycharm everything is crooked, why?

Question

Python

More.
There is a window in which widgets are collected in a layer. So that when the window is resized, the dimensions of the layers also change. I put a grid layout near the window.
Preliminarily you look everything works. This widget layer takes up about 70% of the window,
but when I run it in pycharm, the window opens and my widget layer turns into a tiny lump in the upper left corner of the dialog box. why can that be?

1 Photo in Designer
2 Photo in PyCharm