Fix empty page added when showing OOB dialog

CHANGELOG.md

@@ -16,6 +16,7 @@
 - Bugfix: Fixed input in reply thread popup losing focus when dragging. (#4815)
 - Bugfix: Fixed the Quick Switcher (CTRL+K) from sometimes showing up on the wrong window. (#4819)
 - Bugfix: Fixed too much text being copied when copying chat messages. (#4812, #4830, #4839)
+- Bugfix: Fixed empty page being added when showing out of bounds dialog. (#4849)
 - Dev: Fixed UTF16 encoding of `modes` file for the installer. (#4791)
 - Dev: Temporarily disable High DPI scaling on Qt6 builds on Windows. (#4767)
 - Dev: Tests now run on Ubuntu 22.04 instead of 20.04 to loosen C++ restrictions in tests. (#4774)

src/widgets/Notebook.cpp

@@ -1439,6 +1439,11 @@ SplitContainer *SplitNotebook::getOrAddSelectedPage()
     return this->addPage();
 }
 
+SplitContainer *SplitNotebook::getSelectedPage()
+{
+    return dynamic_cast<SplitContainer *>(Notebook::getSelectedPage());
+}
+
 void SplitNotebook::select(QWidget *page, bool focusPage)
 {
     // If there's a previously selected page, go through its splits and

src/widgets/Notebook.hpp

@@ -209,6 +209,8 @@ class SplitNotebook : public Notebook
 
     SplitContainer *addPage(bool select = false);
     SplitContainer *getOrAddSelectedPage();
+    /// Returns `nullptr` when no page is selected.
+    SplitContainer *getSelectedPage();
     void select(QWidget *page, bool focusPage = true) override;
     void themeChangedEvent() override;
 

src/widgets/Window.cpp

@@ -109,7 +109,7 @@ bool Window::event(QEvent *event)
         }
 
         case QEvent::WindowDeactivate: {
-            auto page = this->notebook_->getOrAddSelectedPage();
+            auto *page = this->notebook_->getSelectedPage();
 
             if (page != nullptr)
             {
@@ -119,12 +119,8 @@ bool Window::event(QEvent *event)
                 {
                     split->updateLastReadMessage();
                 }
-            }
 
-            if (SplitContainer *container =
-                    dynamic_cast<SplitContainer *>(page))
-            {
-                container->hideResizeHandles();
+                page->hideResizeHandles();
             }
         }
         break;