[Win] This fix completes e934af9

src/lib/app/qupzilla.cpp

@@ -1579,6 +1579,12 @@ void QupZilla::triggerTabsOnTop(bool enable)
     }
 
     qzSettings->tabsOnTop = enable;
+
+#ifdef Q_OS_WIN
+    if (QtWin::isCompositionEnabled()) {
+        applyBlurToMainWindow();
+    }
+#endif
 }
 
 void QupZilla::refreshHistory()
@@ -2339,7 +2345,9 @@ bool QupZilla::nativeEvent(const QByteArray &eventType, void* _message, long* re
 
 void QupZilla::applyBlurToMainWindow(bool force)
 {
-    if (!force && (m_actionShowFullScreen->isChecked() || !m_usingTransparentBackground)) {
+    if (!force && (m_actionShowFullScreen->isChecked()
+                   || !m_usingTransparentBackground
+                   || m_tabWidget->getTabBar()->isChangingTab())) {
         return;
     }
     int topMargin = 0;

src/lib/rss/rssnotification.cpp

@@ -50,6 +50,7 @@ RSSNotification::RSSNotification(const QString &title, const QUrl &url, WebView*
     , m_url(url)
     , m_view(parent)
 {
+    setAutoFillBackground(true);
     setAttribute(Qt::WA_DeleteOnClose);
 
     ui->setupUi(widget());

src/lib/tools/html5permissions/html5permissionsnotification.cpp

@@ -31,6 +31,7 @@ HTML5PermissionsNotification::HTML5PermissionsNotification(const QString &host,
     , m_frame(frame)
     , m_feature(feature)
 {
+    setAutoFillBackground(true);
     ui->setupUi(widget());
 
     ui->close->setIcon(qIconProvider->standardIcon(QStyle::SP_DialogCloseButton));

src/lib/webview/tabbar.cpp

@@ -44,6 +44,7 @@ TabBar::TabBar(QupZilla* mainClass, TabWidget* tabWidget)
     , m_tabWidget(tabWidget)
     , m_tabPreview(new TabPreview(mainClass, tabWidget))
     , m_showTabPreviews(false)
+    , m_isChangingTab(false)
     , m_clickedTab(0)
     , m_pinnedTabsCount(0)
     , m_normalTabWidth(0)
@@ -399,13 +400,14 @@ void TabBar::currentTabChanged(int index)
     if (!validIndex(index)) {
         return;
     }
-
+    m_isChangingTab = true;
     hideTabPreview(false);
 
     showCloseButton(index);
     hideCloseButton(m_tabWidget->lastTabIndex());
 
     m_tabWidget->currentTabChanged(index);
+    m_isChangingTab = false;
 }
 
 void TabBar::bookmarkTab()

src/lib/webview/tabbar.h

@@ -42,6 +42,7 @@ public:
     int pinnedTabsCount();
     int normalTabsCount();
 
+    bool isChangingTab() { return m_isChangingTab; }
     void updatePinnedTabCloseButton(int index);
 
     void disconnectObjects();
@@ -105,6 +106,7 @@ private:
     QTimer* m_tabPreviewTimer;
 
     bool m_showTabPreviews;
+    bool m_isChangingTab;
 
     int m_clickedTab;
     int m_pinnedTabsCount;

src/plugins/GreaseMonkey/gm_notification.cpp

@@ -31,6 +31,7 @@ GM_Notification::GM_Notification(GM_Manager* manager, const QString &tmpfileName
     , m_tmpFileName(tmpfileName)
     , m_fileName(fileName)
 {
+    setAutoFillBackground(true);
     ui->setupUi(widget());
 
     ui->close->setIcon(qIconProvider->standardIcon(QStyle::SP_DialogCloseButton));