Description of problem:

dnfdragora 2.1.0 is starting in full-screen (maximized) mode. This started to occur either with the F32 to F33 upgrade or with updates very shortly after.

Everything works fine, but it is bothersome to have to resize the window each time.

Version-Release number of selected component (if applicable): 
dnfdragora 2.1.0
Mate 1.24.1
Fedora 33


How reproducible: 
Consistently 

Steps to Reproduce:
1. Start dnfdragora from command line or menu
2. Observe app opening in maximized state
3. All subsequent functions work and unmaximized state can be obtained using the "Restore Window" "button".

Actual results:
dnfdragora starts in full-screen (maximized) mode.

Expected results:
dnfsragora starts in un-maximized mode

Additional info:

----- Console transcript -----
$ dnfdragora
Try reading configuration file
From ./dnfdragora.yaml
Skipped exception: <[Errno 2] No such file or directory: './dnfdragora.yaml'> 
From /etc/dnfdragora/dnfdragora.yaml
Finally read user settings from /home/rengland/.config/dnfdragora.yaml
<_M_> [ui] YUILoader.cc:60 loadUI(): DISPLAY: ":0"
<_M_> [ui] YUILoader.cc:61 loadUI(): XDG_CURRENT_DESKTOP: "MATE"
<_M_> [ui] YUILoader.cc:62 loadUI(): YUI_PREFERED_BACKEND: ""
<_M_> [ui] YUILoader.cc:74 loadUI(): Detected a Gtk-based desktop environment.
<_M_> [ui] YUILoader.cc:74 loadUI(): Prefering Gtk-UI if available and no
<_M_> [ui] YUILoader.cc:74 loadUI(): user-selected override is present.
<_M_> [ui] YUILoader.cc:96 loadUI(): User-selected UI-plugin: ""
<_M_> [ui] YUILoader.cc:128 loadUI(): Using UI-plugin: "gtk"
<_M_> [ui] YUI.cc:81 YUI(): This is libyui 3.10.0
<_M_> [ui] YUI.cc:82 YUI(): Creating UI without threads
<_M_> [gtk] YGUI.cc:48 YGUI(): This is libyui-gtk 2.49.0
<_M_> [gtk] YGUI.cc:166 checkInit(): Style "/usr/share/libyui/theme/current/wizard/style.css"
<_M_> [gtk] YGUI.cc:188 checkInit(): Style "/usr/share/libyui/theme/current/wizard/style.css" not found. Ignoring style
<WRN> [gtk] YGUtils.cc:543 loadPixbuf(): Could not load icon: /usr/share/libyui/theme/icons/32x32/apps/yast.png
<WRN> [gtk] YGUtils.cc:543 loadPixbuf(): Reason: Failed to open file “/usr/share/libyui/theme/icons/32x32/apps/yast.png”: No such file or directory
<_M_> [ui] YUI.cc:236 topmostConstructorHasFinished(): Running without threads
<_M_> [ew] YExternalWidgets.cc:40 YExternalWidgets(): Creating Libyui External Widgets object
<ERR> [Gtk] libyui-gtk:0 (): gtk_window_set_default_size: assertion 'width >= -1' failed
<ERR> [Gtk] libyui-gtk:0 (): gtk_window_resize: assertion 'width > 0' failed
<_M_> [gtk] YMGA_GCBTable.cc:414 YMGA_GCBTable():  Slection mode 2
<_M_> [gtk] YMGA_GCBTable.cc:433 YMGA_GCBTable():  columns 8 tot 8
Get root backend. Locked (False)
Get root backend. Locked (False)
End found 1 groups
<_M_> [ui] YUILoader.cc:234 deleteUI(): Shutting down UI
<_M_> [ew] YExternalWidgets.cc:123 ~YExternalWidgetsTerminator(): Shutting down mga External Widgets
<_M_> [ew] YMGAWidgetExtensionFactory.cc:49 ~YMGAWidgetFactory(): Factory removed