Only set the pretty OSD's message in the notifications settings page's constructor - don't show it as well. It would just get hidden again straight away, and for some reason this triggers a (Qt?) bug where the window gets painted in the top-left corner, but reacts to mouse clicks in its actual position.

Fixes issue 2110

src/ui/notificationssettingspage.cpp

@@ -34,8 +34,8 @@ NotificationsSettingsPage::NotificationsSettingsPage(SettingsDialog* dialog)
   ui_->setupUi(this);
   setWindowIcon(IconLoader::Load("help-hint"));
 
-  pretty_popup_->ShowMessage(tr("OSD Preview"), tr("Drag to reposition"),
-                             QImage(":nocover.png"));
+  pretty_popup_->SetMessage(tr("OSD Preview"), tr("Drag to reposition"),
+                            QImage(":nocover.png"));
 
   ui_->notifications_bg_preset->setItemData(0, QColor(OSDPretty::kPresetBlue), Qt::DecorationRole);
   ui_->notifications_bg_preset->setItemData(1, QColor(OSDPretty::kPresetOrange), Qt::DecorationRole);

src/widgets/osdpretty.cpp

@@ -19,15 +19,15 @@
 #include "ui_osdpretty.h"
 
 
-#include <QColor>
-#include <QPainter>
-#include <QLayout>
 #include <QApplication>
-#include <QDesktopWidget>
-#include <QSettings>
-#include <QMouseEvent>
-#include <QTimer>
 #include <QBitmap>
+#include <QColor>
+#include <QDesktopWidget>
+#include <QLayout>
+#include <QMouseEvent>
+#include <QPainter>
+#include <QSettings>
+#include <QTimer>
 #include <QTimeLine>
 
 #include <QtDebug>
@@ -223,8 +223,7 @@ void OSDPretty::paintEvent(QPaintEvent *) {
   p.drawRoundedRect(box, kBorderRadius, kBorderRadius);
 }
 
-// Set the desidered message and then show the OSD
-void OSDPretty::ShowMessage(const QString& summary, const QString& message,
+void OSDPretty::SetMessage(const QString& summary, const QString& message,
                            const QImage& image) {
 
   if (!image.isNull()) {
@@ -242,6 +241,12 @@ void OSDPretty::ShowMessage(const QString& summary, const QString& message,
 
   if (isVisible())
     Reposition();
+}
+
+// Set the desired message and then show the OSD
+void OSDPretty::ShowMessage(const QString& summary, const QString& message,
+                            const QImage& image) {
+  SetMessage(summary, message, image);
 
   if (isVisible() && mode_ == Mode_Popup) {
     // The OSD is already visible, toggle or restart the timer

src/widgets/osdpretty.h

@@ -49,9 +49,12 @@ class OSDPretty : public QWidget {
 
   static bool IsTransparencyAvailable();
 
-  void ShowMessage(const QString& summary,
+  void SetMessage(const QString& summary,
                   const QString& message,
                   const QImage& image);
+  void ShowMessage(const QString& summary,
+                   const QString& message,
+                   const QImage& image);
 
   // Controls the fader.  This is enabled by default on Windows.
   void set_fading_enabled(bool enabled) { fading_enabled_ = enabled; }