Don't initialize Properties widget size until window is shown

PR #19328.
Closes #19322.

src/gui/mainwindow.cpp

@@ -455,8 +455,6 @@ MainWindow::MainWindow(IGUIApplication *app, WindowState initialState)
     }
 #endif
 
-    m_propertiesWidget->readSettings();
-
     const bool isFiltersSidebarVisible = pref->isFiltersSidebarVisible();
     m_ui->actionShowFiltersSidebar->setChecked(isFiltersSidebarVisible);
     if (isFiltersSidebarVisible)
@@ -1092,6 +1090,12 @@ void MainWindow::showEvent(QShowEvent *e)
     {
         // preparations before showing the window
 
+        if (m_neverShown)
+        {
+            m_propertiesWidget->readSettings();
+            m_neverShown = false;
+        }
+
         if (currentTabWidget() == m_transferListWidget)
             m_propertiesWidget->loadDynamicData();
 

src/gui/mainwindow.h

@@ -202,6 +202,7 @@ private:
     QFileSystemWatcher *m_executableWatcher = nullptr;
     // GUI related
     bool m_posInitialized = false;
+    bool m_neverShown = true;
     QPointer<QTabWidget> m_tabs;
     QPointer<StatusBar> m_statusBar;
     QPointer<OptionsDialog> m_options;