How to fix PyQgis layout resizing problem when making window bigger?

Question

I'm working on creating python plugin that implements image viewer and use layout to plased elements in correct plases. I want to resize all elements in dialog window of this plugin using resizeEvent of QDialog, but I have one strange problem: when I want to make dialog window smaller - all works good like on image1, but, if I want to make window bigger I have seen a problem like on image2:

Here is my resizeEvent method for my dialog:

def resizeEvent(self, a0: QResizeEvent):
    geom = list(self.geometry().getCoords())
    x_shift = geom[2] - geom[0] #transform x coord from monitor coords to dialog window coords
    y_shift = geom[3] - geom[1] #transform y coord from monitor coords to dialog window coords
    self.verticalLayout.setGeometry(QRect(0, 0, x_shift, y_shift))

And here is my code how I connect my ui with python code using uic:

import os

from qgis.PyQt import uic
from qgis.PyQt import QtWidgets

FORM_CLASS, _ = uic.loadUiType(os.path.join(
    os.path.dirname(__file__), 'name_of_ui'))
class nameDialog(QtWidgets.QDialog, FORM_CLASS):
def __init__(self, parent=None):
    super(status_checkerDialog, self).__init__(parent)
    self.setupUi(self)

In this script, I create the resize function. Also, I would like to add that I use to build the skeleton of the module named Plugin Builder. Maybe this information will help you point out exactly where I am making a mistake. I also add the code skeleton that implements all functions of the module:

class status_checker:

    def __init__(self, iface):
        "Constructor"
    def add_action(
        self,
        icon_path,
        text,
        callback,
        enabled_flag=True,
        add_to_menu=True,
        add_to_toolbar=True,
        status_tip=None,
        whats_this=None,
        parent=None):
        """Add a toolbar icon to the toolbar"""
    def initGui(self):
        """Create the menu entries and toolbar icons inside the QGIS GUI"""
    def unload(self):
        """Removes the plugin menu item and icon from QGIS GUI."""
    def run(self):
        """Run method that performs all the real work"""
        # Create the dialog with elements (after translation) and keep reference
        # Only create GUI ONCE in callback, so that it will only load when the plugin is started
        if self.first_start == True:
            self.first_start = False #self.first_start is a variable that is created in the initialization function and initially set to true
            self.dlg = status_checkerDialog()