1 files changed, 4 insertions, 0 deletions
diff --git a/src/plugins/platforms/cocoa/qnsview.mm b/src/plugins/platforms/cocoa/qnsview.mm
index fd989cb840..a27c93e23f 100644
--- a/src/plugins/platforms/cocoa/qnsview.mm
+++ b/src/plugins/platforms/cocoa/qnsview.mm
@@ -374,6 +374,8 @@ static NSString *_q_NSWindowDidChangeOcclusionStateNotification = nil;
         // calles, which Qt and Qt applications do not excpect.
         if (!m_platformWindow->m_inSetGeometry)
             QWindowSystemInterface::flushWindowSystemEvents();
+        else
+            m_backingStore = QImage();
     }
 }
 
@@ -962,6 +964,7 @@ QT_WARNING_POP
     if (m_window->flags() & Qt::WindowTransparentForInput)
         return [super rightMouseDown:theEvent];
     m_buttons |= Qt::RightButton;
+    m_sendUpAsRightButton = true;
     [self handleMouseEvent:theEvent];
 }
 
@@ -979,6 +982,7 @@ QT_WARNING_POP
     if (m_window->flags() & Qt::WindowTransparentForInput)
         return [super rightMouseUp:theEvent];
     m_buttons &= ~Qt::RightButton;
+    m_sendUpAsRightButton = false;
     [self handleMouseEvent:theEvent];
 }